Tank vehicle

For Tank vehicle, test required is a knowledge test; allowed on a clp (learner's permit) is Yes — 383.93(a)(2) names this among the only endorsements allowed on a commercial learner's permit, recorded from its source on 2026-08-19.

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 § 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 § 383.5 ; or (5) School buses. (c) Endorsement testing requirements. The following tests are required for the endorsements contained in 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;

— ecfr.gov, retrieved 2026-08-19

What ecfr.gov says

(iii) A CLP holder with a tank vehicle (N) endorsement must have taken and passed the N endorsement knowledge test. A CLP holder with an N endorsement may only operate an empty tank vehicle and is prohibited from operating any tank vehicle that previously contained hazardous materials that has not been purged of any residue.

— ecfr.gov, retrieved 2026-08-19

Sources

• ecfr.govhttps://www.ecfr.gov/current/title-49/section-383.93
• ecfr.govhttps://www.ecfr.gov/current/title-49/section-383.25

Last verified against source: 2026-08-19. Due for re-check by 2027-08-19. This page as Markdown · OKF bundle · full dataset as JSON.