788 records

Can these two hazard classes travel in the same load?

788 records covering 37 first hazard classes, one fact each. Every value is transcribed from the source that states it and carries the sentence it was taken from: 2 sources across 1 site, last checked 2026-11-09, due for re-check by 2027-08-10. Every record has a page of its own, quoting the line that states it.

Records788

Sources2

Verified2026-11-09

Review by2027-08-10

LicenceUS federal regulation; facts not copyrightable, quoted with citation.

About this data

The pairwise load-segregation rules for hazardous materials: for each pair of hazard classes/divisions, whether they may be loaded, transported or stored together on a highway vehicle (49 CFR 177.848) or on a vessel (49 CFR 176.83). One record is one intersection under one mode: the two classes, the code the table prints in that cell ('X' may not be loaded together, 'O' separated so no commingling on leakage, '*' see the class-1 compatibility table, blank no restriction, plus the ammonium-nitrate note 'A'), and what that code requires in the section's own words. Resolving the code is what the page is for — the table prints a bare letter and its meaning sits in a note paragraph further down the section, so reading one cell off the regulation takes two lookups. Both modes are in the dataset, as separate records: the two tables label their Class 1 rows differently ('1.1 and 1.2' on highway against '1.1, 1.2, 1.5' on vessel), so putting one pair's two answers on a single page is a mapping decision and not a fold. Answers 'can Division 4.3 ride with Class 8 corrosive liquids' (yes on highway with separation — the O cell), 'can I load oxidizers with flammable liquids', and the per-pair questions shippers and freight brokers ask before booking mixed loads. A pairwise matrix is a shape the portfolio has not tried: the record is an intersection, not a row.

The data

First hazard class (table row)	Second hazard class (table column)	Row description	Transport mode	Segregation code	What the code requires
1.1, 1.2, 1.5	1.1, 1.2, 1.5	Explosives	Carriage by Vessel	(*)	*—See § 176.144 of this part for segregation within Class 1.
1.1, 1.2, 1.5	1.3	Explosives	Carriage by Vessel	(*)	*—See § 176.144 of this part for segregation within Class 1.
1.1, 1.2, 1.5	1.4, 1.6	Explosives	Carriage by Vessel	(*)	*—See § 176.144 of this part for segregation within Class 1.
1.1, 1.2, 1.5	2.1	Explosives	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
1.1, 1.2, 1.5	2.2	Explosives	Carriage by Vessel	2	2—“Separated from.”
1.1, 1.2, 1.5	2.3	Explosives	Carriage by Vessel	2	2—“Separated from.”
1.1, 1.2, 1.5	3	Explosives	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
1.1, 1.2, 1.5	4.1	Explosives	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
1.1, 1.2, 1.5	4.2	Explosives	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
1.1, 1.2, 1.5	4.3	Explosives	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
1.1, 1.2, 1.5	5.1	Explosives	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
1.1, 1.2, 1.5	5.2	Explosives	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
1.1, 1.2, 1.5	6.1	Explosives	Carriage by Vessel	2	2—“Separated from.”
1.1, 1.2, 1.5	6.2	Explosives	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
1.1, 1.2, 1.5	7	Explosives	Carriage by Vessel	2	2—“Separated from.”
1.1, 1.2, 1.5	8	Explosives	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
1.1, 1.2, 1.5	9	Explosives	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
1.1 and 1.2	1.1 1.2	Explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.1 and 1.2	1.3	Explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.1 and 1.2	1.4	Explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.1 and 1.2	1.5	Explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.1 and 1.2	1.6	Explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.1 and 1.2	2.1	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.1 and 1.2	2.2	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.1 and 1.2	2.3 gas zone A	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.1 and 1.2	2.3 gas Zone B	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.1 and 1.2	3	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.1 and 1.2	4.1	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.1 and 1.2	4.2	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.1 and 1.2	4.3	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.1 and 1.2	5.1	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.1 and 1.2	5.2	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.1 and 1.2	6.1 liquids PG I zone A	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.1 and 1.2	7	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.1 and 1.2	8 liquids only	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.1 and 1.2	ammonium nitrate (UN1942)	Explosives	Carriage by Public Highway	A	The note “A” in the second column of the table means that, notwithstanding the requirements of the letter “X”, ammonium nitrate (UN1942) and ammonium nitrate fertilizer may be loaded or stored with Division 1.1 (explosive) or Division 1.5 materials, unless otherwise prohibited by § 177.835(c).
1.3	1.1 1.2	Explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.3	1.3	Explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.3	1.4	Explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.3	1.5	Explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.3	1.6	Explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.3	2.1	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.3	2.2	Explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.3	2.3 gas zone A	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.3	2.3 gas Zone B	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.3	3	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.3	4.1	Explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.3	4.2	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.3	4.3	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.3	5.1	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.3	5.2	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.3	6.1 liquids PG I zone A	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.3	7	Explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.3	8 liquids only	Explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.3	1.1, 1.2, 1.5	Explosives	Carriage by Vessel	(*)	*—See § 176.144 of this part for segregation within Class 1.
1.3	1.3	Explosives	Carriage by Vessel	(*)	*—See § 176.144 of this part for segregation within Class 1.
1.3	1.4, 1.6	Explosives	Carriage by Vessel	(*)	*—See § 176.144 of this part for segregation within Class 1.
1.3	2.1	Explosives	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
1.3	2.2	Explosives	Carriage by Vessel	2	2—“Separated from.”
1.3	2.3	Explosives	Carriage by Vessel	2	2—“Separated from.”
1.3	3	Explosives	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
1.3	4.1	Explosives	Carriage by Vessel	3	3—“Separated by a complete compartment or hold from.”
1.3	4.2	Explosives	Carriage by Vessel	3	3—“Separated by a complete compartment or hold from.”
1.3	4.3	Explosives	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
1.3	5.1	Explosives	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
1.3	5.2	Explosives	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
1.3	6.1	Explosives	Carriage by Vessel	2	2—“Separated from.”
1.3	6.2	Explosives	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
1.3	7	Explosives	Carriage by Vessel	2	2—“Separated from.”
1.3	8	Explosives	Carriage by Vessel	2	2—“Separated from.”
1.3	9	Explosives	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
1.4	1.1 1.2	Explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.4	1.3	Explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.4	1.4	Explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.4	1.5	Explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.4	1.6	Explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.4	2.1	Explosives	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
1.4	2.2	Explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.4	2.3 gas zone A	Explosives	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
1.4	2.3 gas Zone B	Explosives	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
1.4	3	Explosives	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
1.4	4.1	Explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.4	4.2	Explosives	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
1.4	4.3	Explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.4	5.1	Explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.4	5.2	Explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.4	6.1 liquids PG I zone A	Explosives	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
1.4	7	Explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.4	8 liquids only	Explosives	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
1.4, 1.6	1.1, 1.2, 1.5	Explosives	Carriage by Vessel	(*)	*—See § 176.144 of this part for segregation within Class 1.
1.4, 1.6	1.3	Explosives	Carriage by Vessel	(*)	*—See § 176.144 of this part for segregation within Class 1.
1.4, 1.6	1.4, 1.6	Explosives	Carriage by Vessel	(*)	*—See § 176.144 of this part for segregation within Class 1.
1.4, 1.6	2.1	Explosives	Carriage by Vessel	2	2—“Separated from.”
1.4, 1.6	2.2	Explosives	Carriage by Vessel	1	1—“Away from.”
1.4, 1.6	2.3	Explosives	Carriage by Vessel	1	1—“Away from.”
1.4, 1.6	3	Explosives	Carriage by Vessel	2	2—“Separated from.”
1.4, 1.6	4.1	Explosives	Carriage by Vessel	2	2—“Separated from.”
1.4, 1.6	4.2	Explosives	Carriage by Vessel	2	2—“Separated from.”
1.4, 1.6	4.3	Explosives	Carriage by Vessel	2	2—“Separated from.”
1.4, 1.6	5.1	Explosives	Carriage by Vessel	2	2—“Separated from.”
1.4, 1.6	5.2	Explosives	Carriage by Vessel	2	2—“Separated from.”
1.4, 1.6	6.1	Explosives	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
1.4, 1.6	6.2	Explosives	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
1.4, 1.6	7	Explosives	Carriage by Vessel	2	2—“Separated from.”
1.4, 1.6	8	Explosives	Carriage by Vessel	2	2—“Separated from.”
1.4, 1.6	9	Explosives	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
1.5	1.1 1.2	Very insensitive explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.5	1.3	Very insensitive explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.5	1.4	Very insensitive explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.5	1.5	Very insensitive explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.5	1.6	Very insensitive explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.5	2.1	Very insensitive explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.5	2.2	Very insensitive explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.5	2.3 gas zone A	Very insensitive explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.5	2.3 gas Zone B	Very insensitive explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.5	3	Very insensitive explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.5	4.1	Very insensitive explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.5	4.2	Very insensitive explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.5	4.3	Very insensitive explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.5	5.1	Very insensitive explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.5	5.2	Very insensitive explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.5	6.1 liquids PG I zone A	Very insensitive explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.5	7	Very insensitive explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.5	8 liquids only	Very insensitive explosives	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
1.5	ammonium nitrate (UN1942)	Very insensitive explosives	Carriage by Public Highway	A	The note “A” in the second column of the table means that, notwithstanding the requirements of the letter “X”, ammonium nitrate (UN1942) and ammonium nitrate fertilizer may be loaded or stored with Division 1.1 (explosive) or Division 1.5 materials, unless otherwise prohibited by § 177.835(c).
1.6	1.1 1.2	Extremely insensitive explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.6	1.3	Extremely insensitive explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.6	1.4	Extremely insensitive explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.6	1.5	Extremely insensitive explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.6	1.6	Extremely insensitive explosives	Carriage by Public Highway	*	The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in paragraph (f) of this section.
1.6	2.1	Extremely insensitive explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.6	2.2	Extremely insensitive explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.6	2.3 gas zone A	Extremely insensitive explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.6	2.3 gas Zone B	Extremely insensitive explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.6	3	Extremely insensitive explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.6	4.1	Extremely insensitive explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.6	4.2	Extremely insensitive explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.6	4.3	Extremely insensitive explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.6	5.1	Extremely insensitive explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.6	5.2	Extremely insensitive explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.6	6.1 liquids PG I zone A	Extremely insensitive explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.6	7	Extremely insensitive explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
1.6	8 liquids only	Extremely insensitive explosives	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.1	1.1 1.2	Flammable gases	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.1	1.3	Flammable gases	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.1	1.4	Flammable gases	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
2.1	1.5	Flammable gases	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.1	1.6	Flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.1	2.1	Flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.1	2.2	Flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.1	2.3 gas zone A	Flammable gases	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.1	2.3 gas Zone B	Flammable gases	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
2.1	3	Flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.1	4.1	Flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.1	4.2	Flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.1	4.3	Flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.1	5.1	Flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.1	5.2	Flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.1	6.1 liquids PG I zone A	Flammable gases	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
2.1	7	Flammable gases	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
2.1	8 liquids only	Flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.1	1.1, 1.2, 1.5	Flammable gases	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
2.1	1.3	Flammable gases	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
2.1	1.4, 1.6	Flammable gases	Carriage by Vessel	2	2—“Separated from.”
2.1	2.1	Flammable gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.1	2.2	Flammable gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.1	2.3	Flammable gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.1	3	Flammable gases	Carriage by Vessel	2	2—“Separated from.”
2.1	4.1	Flammable gases	Carriage by Vessel	1	1—“Away from.”
2.1	4.2	Flammable gases	Carriage by Vessel	2	2—“Separated from.”
2.1	4.3	Flammable gases	Carriage by Vessel	2	2—“Separated from.”
2.1	5.1	Flammable gases	Carriage by Vessel	2	2—“Separated from.”
2.1	5.2	Flammable gases	Carriage by Vessel	2	2—“Separated from.”
2.1	6.1	Flammable gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.1	6.2	Flammable gases	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
2.1	7	Flammable gases	Carriage by Vessel	2	2—“Separated from.”
2.1	8	Flammable gases	Carriage by Vessel	1	1—“Away from.”
2.1	9	Flammable gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.2	1.1 1.2	Non-toxic, non-flammable gases	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.2	1.3	Non-toxic, non-flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.2	1.4	Non-toxic, non-flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.2	1.5	Non-toxic, non-flammable gases	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.2	1.6	Non-toxic, non-flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.2	2.1	Non-toxic, non-flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.2	2.2	Non-toxic, non-flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.2	2.3 gas zone A	Non-toxic, non-flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.2	2.3 gas Zone B	Non-toxic, non-flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.2	3	Non-toxic, non-flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.2	4.1	Non-toxic, non-flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.2	4.2	Non-toxic, non-flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.2	4.3	Non-toxic, non-flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.2	5.1	Non-toxic, non-flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.2	5.2	Non-toxic, non-flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.2	6.1 liquids PG I zone A	Non-toxic, non-flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.2	7	Non-toxic, non-flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.2	8 liquids only	Non-toxic, non-flammable gases	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.2	1.1, 1.2, 1.5	Non-toxic, non-flammable gases	Carriage by Vessel	2	2—“Separated from.”
2.2	1.3	Non-toxic, non-flammable gases	Carriage by Vessel	2	2—“Separated from.”
2.2	1.4, 1.6	Non-toxic, non-flammable gases	Carriage by Vessel	1	1—“Away from.”
2.2	2.1	Non-toxic, non-flammable gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.2	2.2	Non-toxic, non-flammable gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.2	2.3	Non-toxic, non-flammable gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.2	3	Non-toxic, non-flammable gases	Carriage by Vessel	1	1—“Away from.”
2.2	4.1	Non-toxic, non-flammable gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.2	4.2	Non-toxic, non-flammable gases	Carriage by Vessel	1	1—“Away from.”
2.2	4.3	Non-toxic, non-flammable gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.2	5.1	Non-toxic, non-flammable gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.2	5.2	Non-toxic, non-flammable gases	Carriage by Vessel	1	1—“Away from.”
2.2	6.1	Non-toxic, non-flammable gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.2	6.2	Non-toxic, non-flammable gases	Carriage by Vessel	2	2—“Separated from.”
2.2	7	Non-toxic, non-flammable gases	Carriage by Vessel	1	1—“Away from.”
2.2	8	Non-toxic, non-flammable gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.2	9	Non-toxic, non-flammable gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.3	1.1 1.2	Poisonous gas Zone A	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.3	1.3	Poisonous gas Zone A	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.3	1.4	Poisonous gas Zone A	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
2.3	1.5	Poisonous gas Zone A	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.3	1.6	Poisonous gas Zone A	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.3	2.1	Poisonous gas Zone A	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.3	2.2	Poisonous gas Zone A	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.3	2.3 gas zone A	Poisonous gas Zone A	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.3	2.3 gas Zone B	Poisonous gas Zone A	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.3	3	Poisonous gas Zone A	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.3	4.1	Poisonous gas Zone A	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.3	4.2	Poisonous gas Zone A	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.3	4.3	Poisonous gas Zone A	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.3	5.1	Poisonous gas Zone A	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.3	5.2	Poisonous gas Zone A	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.3	6.1 liquids PG I zone A	Poisonous gas Zone A	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.3	7	Poisonous gas Zone A	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.3	8 liquids only	Poisonous gas Zone A	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.3	1.1 1.2	Poisonous gas Zone B	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.3	1.3	Poisonous gas Zone B	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.3	1.4	Poisonous gas Zone B	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
2.3	1.5	Poisonous gas Zone B	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
2.3	1.6	Poisonous gas Zone B	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.3	2.1	Poisonous gas Zone B	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
2.3	2.2	Poisonous gas Zone B	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.3	2.3 gas zone A	Poisonous gas Zone B	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.3	2.3 gas Zone B	Poisonous gas Zone B	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.3	3	Poisonous gas Zone B	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
2.3	4.1	Poisonous gas Zone B	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
2.3	4.2	Poisonous gas Zone B	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
2.3	4.3	Poisonous gas Zone B	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
2.3	5.1	Poisonous gas Zone B	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
2.3	5.2	Poisonous gas Zone B	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
2.3	6.1 liquids PG I zone A	Poisonous gas Zone B	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.3	7	Poisonous gas Zone B	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
2.3	8 liquids only	Poisonous gas Zone B	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
2.3	1.1, 1.2, 1.5	Poisonous gases	Carriage by Vessel	2	2—“Separated from.”
2.3	1.3	Poisonous gases	Carriage by Vessel	2	2—“Separated from.”
2.3	1.4, 1.6	Poisonous gases	Carriage by Vessel	1	1—“Away from.”
2.3	2.1	Poisonous gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.3	2.2	Poisonous gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.3	2.3	Poisonous gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.3	3	Poisonous gases	Carriage by Vessel	2	2—“Separated from.”
2.3	4.1	Poisonous gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.3	4.2	Poisonous gases	Carriage by Vessel	2	2—“Separated from.”
2.3	4.3	Poisonous gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.3	5.1	Poisonous gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.3	5.2	Poisonous gases	Carriage by Vessel	2	2—“Separated from.”
2.3	6.1	Poisonous gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.3	6.2	Poisonous gases	Carriage by Vessel	2	2—“Separated from.”
2.3	7	Poisonous gases	Carriage by Vessel	1	1—“Away from.”
2.3	8	Poisonous gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
2.3	9	Poisonous gases	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
3	1.1 1.2	Flammable liquids	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
3	1.3	Flammable liquids	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
3	1.4	Flammable liquids	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
3	1.5	Flammable liquids	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
3	1.6	Flammable liquids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
3	2.1	Flammable liquids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
3	2.2	Flammable liquids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
3	2.3 gas zone A	Flammable liquids	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
3	2.3 gas Zone B	Flammable liquids	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
3	3	Flammable liquids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
3	4.1	Flammable liquids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
3	4.2	Flammable liquids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
3	4.3	Flammable liquids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
3	5.1	Flammable liquids	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
3	5.2	Flammable liquids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
3	6.1 liquids PG I zone A	Flammable liquids	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
3	7	Flammable liquids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
3	8 liquids only	Flammable liquids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
3	1.1, 1.2, 1.5	Flammable liquids	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
3	1.3	Flammable liquids	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
3	1.4, 1.6	Flammable liquids	Carriage by Vessel	2	2—“Separated from.”
3	2.1	Flammable liquids	Carriage by Vessel	2	2—“Separated from.”
3	2.2	Flammable liquids	Carriage by Vessel	1	1—“Away from.”
3	2.3	Flammable liquids	Carriage by Vessel	2	2—“Separated from.”
3	3	Flammable liquids	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
3	4.1	Flammable liquids	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
3	4.2	Flammable liquids	Carriage by Vessel	2	2—“Separated from.”
3	4.3	Flammable liquids	Carriage by Vessel	2	2—“Separated from.”
3	5.1	Flammable liquids	Carriage by Vessel	2	2—“Separated from.”
3	5.2	Flammable liquids	Carriage by Vessel	2	2—“Separated from.”
3	6.1	Flammable liquids	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
3	6.2	Flammable liquids	Carriage by Vessel	3	3—“Separated by a complete compartment or hold from.”
3	7	Flammable liquids	Carriage by Vessel	2	2—“Separated from.”
3	8	Flammable liquids	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
3	9	Flammable liquids	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
4.1	1.1 1.2	Flammable solids	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
4.1	1.3	Flammable solids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.1	1.4	Flammable solids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.1	1.5	Flammable solids	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
4.1	1.6	Flammable solids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.1	2.1	Flammable solids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.1	2.2	Flammable solids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.1	2.3 gas zone A	Flammable solids	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
4.1	2.3 gas Zone B	Flammable solids	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
4.1	3	Flammable solids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.1	4.1	Flammable solids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.1	4.2	Flammable solids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.1	4.3	Flammable solids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.1	5.1	Flammable solids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.1	5.2	Flammable solids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.1	6.1 liquids PG I zone A	Flammable solids	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
4.1	7	Flammable solids	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.1	8 liquids only	Flammable solids	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
4.1	1.1, 1.2, 1.5	Flammable solids	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
4.1	1.3	Flammable solids	Carriage by Vessel	3	3—“Separated by a complete compartment or hold from.”
4.1	1.4, 1.6	Flammable solids	Carriage by Vessel	2	2—“Separated from.”
4.1	2.1	Flammable solids	Carriage by Vessel	1	1—“Away from.”
4.1	2.2	Flammable solids	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
4.1	2.3	Flammable solids	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
4.1	3	Flammable solids	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
4.1	4.1	Flammable solids	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
4.1	4.2	Flammable solids	Carriage by Vessel	1	1—“Away from.”
4.1	4.3	Flammable solids	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
4.1	5.1	Flammable solids	Carriage by Vessel	1	1—“Away from.”
4.1	5.2	Flammable solids	Carriage by Vessel	2	2—“Separated from.”
4.1	6.1	Flammable solids	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
4.1	6.2	Flammable solids	Carriage by Vessel	3	3—“Separated by a complete compartment or hold from.”
4.1	7	Flammable solids	Carriage by Vessel	2	2—“Separated from.”
4.1	8	Flammable solids	Carriage by Vessel	1	1—“Away from.”
4.1	9	Flammable solids	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
4.2	1.1 1.2	Spontaneously combustible materials	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
4.2	1.3	Spontaneously combustible materials	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
4.2	1.4	Spontaneously combustible materials	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
4.2	1.5	Spontaneously combustible materials	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
4.2	1.6	Spontaneously combustible materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.2	2.1	Spontaneously combustible materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.2	2.2	Spontaneously combustible materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.2	2.3 gas zone A	Spontaneously combustible materials	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
4.2	2.3 gas Zone B	Spontaneously combustible materials	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
4.2	3	Spontaneously combustible materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.2	4.1	Spontaneously combustible materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.2	4.2	Spontaneously combustible materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.2	4.3	Spontaneously combustible materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.2	5.1	Spontaneously combustible materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.2	5.2	Spontaneously combustible materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.2	6.1 liquids PG I zone A	Spontaneously combustible materials	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
4.2	7	Spontaneously combustible materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.2	8 liquids only	Spontaneously combustible materials	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
4.2	1.1, 1.2, 1.5	Spontaneously combustible substances	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
4.2	1.3	Spontaneously combustible substances	Carriage by Vessel	3	3—“Separated by a complete compartment or hold from.”
4.2	1.4, 1.6	Spontaneously combustible substances	Carriage by Vessel	2	2—“Separated from.”
4.2	2.1	Spontaneously combustible substances	Carriage by Vessel	2	2—“Separated from.”
4.2	2.2	Spontaneously combustible substances	Carriage by Vessel	1	1—“Away from.”
4.2	2.3	Spontaneously combustible substances	Carriage by Vessel	2	2—“Separated from.”
4.2	3	Spontaneously combustible substances	Carriage by Vessel	2	2—“Separated from.”
4.2	4.1	Spontaneously combustible substances	Carriage by Vessel	1	1—“Away from.”
4.2	4.2	Spontaneously combustible substances	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
4.2	4.3	Spontaneously combustible substances	Carriage by Vessel	1	1—“Away from.”
4.2	5.1	Spontaneously combustible substances	Carriage by Vessel	2	2—“Separated from.”
4.2	5.2	Spontaneously combustible substances	Carriage by Vessel	2	2—“Separated from.”
4.2	6.1	Spontaneously combustible substances	Carriage by Vessel	1	1—“Away from.”
4.2	6.2	Spontaneously combustible substances	Carriage by Vessel	3	3—“Separated by a complete compartment or hold from.”
4.2	7	Spontaneously combustible substances	Carriage by Vessel	2	2—“Separated from.”
4.2	8	Spontaneously combustible substances	Carriage by Vessel	1	1—“Away from.”
4.2	9	Spontaneously combustible substances	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
4.3	1.1 1.2	Dangerous when wet materials	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
4.3	1.3	Dangerous when wet materials	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
4.3	1.4	Dangerous when wet materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.3	1.5	Dangerous when wet materials	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
4.3	1.6	Dangerous when wet materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.3	2.1	Dangerous when wet materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.3	2.2	Dangerous when wet materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.3	2.3 gas zone A	Dangerous when wet materials	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
4.3	2.3 gas Zone B	Dangerous when wet materials	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
4.3	3	Dangerous when wet materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.3	4.1	Dangerous when wet materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.3	4.2	Dangerous when wet materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.3	4.3	Dangerous when wet materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.3	5.1	Dangerous when wet materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.3	5.2	Dangerous when wet materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.3	6.1 liquids PG I zone A	Dangerous when wet materials	Carriage by Public Highway	X	The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
4.3	7	Dangerous when wet materials	Carriage by Public Highway		The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
4.3	8 liquids only	Dangerous when wet materials	Carriage by Public Highway	O	The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
4.3	1.1, 1.2, 1.5	Substances which are dangerous when wet	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
4.3	1.3	Substances which are dangerous when wet	Carriage by Vessel	4	4—“Separated longitudinally by an intervening complete compartment or hold from.”
4.3	1.4, 1.6	Substances which are dangerous when wet	Carriage by Vessel	2	2—“Separated from.”
4.3	2.1	Substances which are dangerous when wet	Carriage by Vessel	2	2—“Separated from.”
4.3	2.2	Substances which are dangerous when wet	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
4.3	2.3	Substances which are dangerous when wet	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
4.3	3	Substances which are dangerous when wet	Carriage by Vessel	2	2—“Separated from.”
4.3	4.1	Substances which are dangerous when wet	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
4.3	4.2	Substances which are dangerous when wet	Carriage by Vessel	1	1—“Away from.”
4.3	4.3	Substances which are dangerous when wet	Carriage by Vessel	X	X—The segregation, if any, is shown in the § 172.101 table.
4.3	5.1	Substances which are dangerous when wet	Carriage by Vessel	2	2—“Separated from.”

Showing the first 400 of 788 records. Every record has its own page, with its source and the quoted line that states it; these list the rest.

Records 1–4001.1, 1.2, 1.5 · 1.1, 1.2, 1.5 · Explosives · Carriage by Vessel … 4.3 · 5.1 · Substances which are dangerous when wet · Carriage by Vessel
Records 401–7884.3 · 5.2 · Substances which are dangerous when wet · Carriage by Vessel … S · S · Compatibility group · Carriage by Public Highway

Where this came from

Every record above links the page it was taken from and quotes the sentence that states it. These are the 2 sources this dataset was assembled from.

ecfr.govhttps://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83
ecfr.govhttps://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848

Machine-readable

data.jsonThe whole dataset — every record with its source URL and source quote.
Open Knowledge Format bundleOne JSON object per line — every record's frontmatter and quoted span exactly as it is held here, in one fetch.
data.csvThe same records as one flat table, for a spreadsheet or a dataframe. The last four columns are the source URL, the quoted sentence it was read from, the date we last checked it, and which columns are our reading rather than the page's words.
How this is made and checkedWhat "verified against source" does and does not mean.

From your own code

Same records, same quotes, without scraping the page: refsource is on PyPI and npm. Each value comes back carrying the URL it was read from and the sentence on that page that states it — .source and .quote sit on the value itself rather than in a side channel, so the checking step is available instead of skipped.

pip install refsource
refsource lookup hazmat-segregation-matrix mode="Carriage by Vessel"

npx -y refsource lookup hazmat-segregation-matrix mode="Carriage by Vessel"

Set your AI assistant up to use this

Two files and no account. Put this in .mcp.json at the root of your project — Claude Code, Cursor, Windsurf, VS Code and Codex all read that file — and your assistant can look this dataset up instead of recalling it. The server is remote, keyless and read-only.

{
  "mcpServers": {
    "referencesource": {
      "type": "http",
      "url": "https://referencesource.org/mcp"
    }
  }
}

Add to Cursor · or, on the command line: claude mcp add --transport http referencesource https://referencesource.org/mcp --scope project

Then one line in the project's CLAUDE.md or AGENTS.md, so the assistant knows when to reach for it:

When a question needs "Hazmat load segregation — which hazard classes may travel together, highway vs vessel", call the referencesource MCP server at https://referencesource.org/mcp (tool `search_records`, dataset_slug `hazmat-segregation-matrix`) instead of answering from memory — every record it returns carries its source URL and a verbatim quote from that page.

What each tool does, and the servers built over single registers: Connect your AI assistant.

788 records. last verified against source 2026-11-09. due for re-check by 2027-08-10.

Licence. US federal regulation; facts not copyrightable, quoted with citation.