**First hazard class (table row):** S

**Second hazard class (table column):** H

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** 4/5

**What the code requires:** “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** A

**Second hazard class (table column):** J

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>

A — Hazmat load segregation — which hazard classes may travel together, highway vs vessel


**First hazard class (table row):** B

**Second hazard class (table column):** J

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>

B — Hazmat load segregation — which hazard classes may travel together, highway vs vessel


**First hazard class (table row):** C

**Second hazard class (table column):** J

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>

C — Hazmat load segregation — which hazard classes may travel together, highway vs vessel


**First hazard class (table row):** D

**Second hazard class (table column):** J

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>

D — Hazmat load segregation — which hazard classes may travel together, highway vs vessel


**First hazard class (table row):** E

**Second hazard class (table column):** J

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>

E — Hazmat load segregation — which hazard classes may travel together, highway vs vessel


**First hazard class (table row):** F

**Second hazard class (table column):** J

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>

F — Hazmat load segregation — which hazard classes may travel together, highway vs vessel


**First hazard class (table row):** G

**Second hazard class (table column):** J

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>

G — Hazmat load segregation — which hazard classes may travel together, highway vs vessel


**First hazard class (table row):** H

**Second hazard class (table column):** J

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>

H — Hazmat load segregation — which hazard classes may travel together, highway vs vessel


**First hazard class (table row):** J

**Second hazard class (table column):** J

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**What the code requires:** A blank space in the table indicates that no restrictions apply.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>

J — Hazmat load segregation — which hazard classes may travel together, highway vs vessel


**First hazard class (table row):** K

**Second hazard class (table column):** J

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>

K — Hazmat load segregation — which hazard classes may travel together, highway vs vessel


**First hazard class (table row):** L

**Second hazard class (table column):** J

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>

L — Hazmat load segregation — which hazard classes may travel together, highway vs vessel


**First hazard class (table row):** N

**Second hazard class (table column):** J

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>

N — Hazmat load segregation — which hazard classes may travel together, highway vs vessel


**First hazard class (table row):** S

**Second hazard class (table column):** J

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** 4/5

**What the code requires:** “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>

S — Hazmat load segregation — which hazard classes may travel together, highway vs vessel


**First hazard class (table row):** A

**Second hazard class (table column):** K

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** B

**Second hazard class (table column):** K

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** C

**Second hazard class (table column):** K

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** D

**Second hazard class (table column):** K

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** E

**Second hazard class (table column):** K

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** F

**Second hazard class (table column):** K

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** G

**Second hazard class (table column):** K

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** H

**Second hazard class (table column):** K

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** J

**Second hazard class (table column):** K

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** K

**Second hazard class (table column):** K

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**What the code requires:** A blank space in the table indicates that no restrictions apply.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** L

**Second hazard class (table column):** K

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** N

**Second hazard class (table column):** K

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** S

**Second hazard class (table column):** K

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** 4/5

**What the code requires:** “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** A

**Second hazard class (table column):** L

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** B

**Second hazard class (table column):** L

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** C

**Second hazard class (table column):** L

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** D

**Second hazard class (table column):** L

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** E

**Second hazard class (table column):** L

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** F

**Second hazard class (table column):** L

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** G

**Second hazard class (table column):** L

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** H

**Second hazard class (table column):** L

**Row description:** Compatibility group

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle.

> Compatibility Table For Class 1 (Explosive) Materials Compatibility group | A | B | C | D | E | F | G | H | J | K | L | N | S | A | | X | X | X | X | X | X | X | X | X | X | X | X | B | X | | X | X (4) | X | X | X | X | X | X | X | X | 4/5 | C | X | X | | 2 | 2 | X | 6 | X | X | X | X | 3 | 4/5 | D | X | X (4) | 2 | | 2 | X | 6 | X | X | X | X | 3 | 4/5 | E | X | X | 2 | 2 | | X | 6 | X | X | X | X | 3 | 4/5 | F | X | X | X | X | X | | X | X | X | X | X | X | 4/5 | G | X | X | 6 | 6 | 6 | X | | X | X | X | X | X | 4/5 | H | X | X | X | X | X | X | X | | X | X | X | X | 4/5 | J | X | X | X | X | X | X | X | X | | X | X | X | 4/5 | K | X | X | X | X | X | X | X | X | X | | X | X | 4/5 | L | X | X | X | X | X | X | X | X | X | X | 1 | X | X | N | X | X | 3 | 3 | 3 | X | X | X | X | X | X | | 4/5 | S | X | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | 4/5 | X | 4/5 | | ( g ) Instructions for using the compatibility table for Class 1 (explosive) materials are as follows: ( 1 ) A blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. ( 3 ) The numbers in the table mean the following: ( i ) “1” means an explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. ( ii ) “2” means any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E. ( iii ) “3” means any combination of explosives from compatibility groups C, D, or E with those in compatibility group N is assigned to compatibility group D. ( iv ) “4” means see <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(g)> § 177.835(g) when transporting detonators. ( v ) “5” means Division 1.4S fireworks may not be loaded on the same transport vehicle with Division 1.1 or 1.2 (explosive) materials. ( vi ) “6” means explosive articles in compatibility group G, other than fireworks and those requiring special handling, may be loaded, transported and stored with other explosive articles of compatibility groups C, D and E, provided that explosive substances (such as those not contained in articles) are not carried in the same transport vehicle.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>