AI Extractable Answer
CDL Class A is required for combination vehicles (tractor + trailer) with GCWR of 26,001+ lbs. It covers semi trucks, flatbeds, tankers, and refrigerated trailers. Class A holders can operate Class B vehicles.
Quick Answer
CDL Class A is required for combination vehicles (tractor + trailer) with a Gross Combination Weight Rating of 26,001+ lbs. It covers semi trucks, flatbeds, tankers, refrigerated trailers, and other tractor-trailer combinations. Class A is the most versatile CDL–holders can operate Class B and Class C vehicles as well.
Vehicles Requiring Class A CDL
- Semi trucks (tractor-trailer)
- Flatbed trucks with trailer
- Tanker trucks
- Refrigerated (reefer) trucks
- Logging trucks
- Heavy haul and lowboy combinations
- Auto carriers (car haulers)
Class A vs Class B
Class A covers combination vehicles (tractor + trailer). Class B covers single vehicles over 26,000 lbs GVWR (dump trucks, bucket trucks, vac trucks). Class A holders can operate Class B vehicles; Class B holders cannot operate Class A vehicles.