A driver licensed for Class A with all endorsements may drive any combination vehicle. The T endorsement allows:
Correct. T endorsement specifically authorizes doubles and triples. Other endorsements (H, N, P, S) cover other categories.
CDL Practice Question #384
Category: Doubles/Triples
Why this question matters
This question is one of 50 in our Doubles/Triples bank. The reasoning above comes directly from the AAMVA CDL Manual, the source document used by every U.S. state DMV. Memorizing the underlying rule — not just the letter answer — is what separates passing on the first attempt from a return trip and another fee.