Class A allows you to operate a vehicle with a total (Both truck and trailer) weight or
GVWR of 26,001 lbs or more. You can also pull a trailer weighing 10,00 lbs or more. These are typically:
Tractor-trailers (18 wheelers)Tractor trailer busesTankersTruck and trailer combos (doubles and triples)FlatbedsMost of Class B and C trucks
Class B allows you to operate a vehicle with a total GVWR weight of 26,001 lb or less.
You can also pull a trailer weighing 10,000 or less. These are typically:
Straight trucksBox TrucksDump TrucksSchool busesPublic busesAnd most class C vehicles