Hazardous Materials
For Hazardous Materials, test required is a knowledge test; allowed on a clp (learner's permit) is No — a CLP may carry only the Passenger, School bus and Tank vehicle endorsements, and this is not one of them, recorded from its source on 2026-08-19.
- Endorsement
- Hazardous Materials verified
- Test required
- a knowledge test verified
- Allowed on a CLP (learner's permit)
- No — a CLP may carry only the Passenger, School bus and Tank vehicle endorsements, and this is not one of them our reading
- Federal prerequisite beyond state testing
- ( 1 ) The Transportation Security Administration has determined that the individual does not pose a security risk warranting denial of the endorsement; or ( 2 ) The individual holds a valid TWIC. per ecfr.gov
- Renewal cycle
- renewed every 5 years or less per ecfr.gov
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
The only endorsements allowed on a CLP are the following: ( i ) Passenger (P); ( ii ) School bus (S); and ( iii ) Tank vehicle (N). ( 3 ) The State must use the codes listed in <https://www.ecfr.gov/current/title-49/section-383.153> § 383.153 when placing endorsements on a CLP or CDL. ( b ) Endorsement descriptions. An operator must obtain State-issued endorsements to his/her CDL to operate commercial motor vehicles which are: ( 1 ) Double/triple trailers; ( 2 ) Passenger vehicles; ( 3 ) Tank vehicles; ( 4 ) Used to transport hazardous materials as defined in <https://www.ecfr.gov/current/title-49/section-383.5> § 383.5 ; or ( 5 ) School buses. ( c ) Endorsement testing requirements. The following tests are required for the endorsements contained in <https://www.ecfr.gov/current/title-49/section-383.93#p-383.93(b)> paragraph (b) of this section: ( 1 ) Double/Triple Trailers —a knowledge test; ( 2 ) Passenger —a knowledge and a skills test; ( 3 ) Tank vehicle —a knowledge test; ( 4 ) Hazardous Materials —a knowledge test; and
— ecfr.gov, retrieved 2026-08-19
What ecfr.gov says
( b ) Prohibition. A State may not issue, renew, upgrade, or transfer a hazardous material endorsement for a CDL to any individual authorizing that individual to operate a commercial motor vehicle transporting a hazardous material in commerce unless— ( 1 ) The Transportation Security Administration has determined that the individual does not pose a security risk warranting denial of the endorsement; or ( 2 ) The individual holds a valid TWIC. ( c ) Individual notification. At least 60 days prior to the expiration date of the CDL or hazardous materials endorsement, a State must notify the holder of a hazardous materials endorsement that the individual must pass a Transportation Security Administration security threat assessment process as part of any application for renewal of the hazardous materials endorsement. The notice must advise a driver that, in order to expedite the security screening process, he or she should file a renewal application as soon as possible, but not later than 30 days before the date of expiration of the endorsement. An individual who does not successfully complete the Transportation Security Administration security threat assessment process referenced in <https://www.ecfr.gov/current/title-49/section-383.141#p-383.141(b)> paragraph (b) of this section may not be issued a hazardous materials endorsement. ( d ) Hazardous materials endorsement renewal cycle. Each State must require that hazardous materials endorsements be renewed every 5 years or less so that individuals are subject to a Transportation Security Administration security screening requirement referenced in <https://www.ecfr.gov/current/title-49/section-383.141#p-383.141(b)> paragraph (b) of this section at least every 5 years.
— ecfr.gov, retrieved 2026-08-19