SESK: Stuff Everyone Should Know · sesk.info/cdl-class-a-drives-b-and-c
If you hold a Class A CDL, can you also drive Class B and C vehicles?
Yes, as long as you have any endorsements the vehicle needs.
- Yes, if you have the needed endorsements ✔
- No, you need a separate test for each class
- Only Class B, never Class C
Why: Passing the Class A knowledge and skills tests also covers heavy straight trucks and small vehicles. You still need the right endorsement, such as P for a bus.
Huh, didn't know that: A Class B holder can likewise drive Class C vehicles, but never a Class A combination.
Why did the Class A driver feel so confident? Every class was beneath them.
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References
Answer: Yes, if you have the needed endorsements. Passing the Class A knowledge and skills tests also covers heavy straight trucks and small vehicles. You still need the right endorsement, such as P for a bus.
- 49 CFR 383.91 Commercial motor vehicle groups (eCFR) www.ecfr.gov/current/title-49/section-383.91
may operate a heavy straight vehicle (Group B) or a small vehicle (Group C), provided that he/she possesses the requisite endorsement(s)
Checked 2026-10-10.
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