What's the difference between a class A and class B CDL?

If you want to drive any sort of large truck for a living, you'll need to know which CDL to get and what sort of rigs you can ...
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Rule change eases process for drivers upgrading from Class B to Class A CDL

It will soon be easier for Class B commercial driver’s license holders to upgrade to a Class A CDL. The Federal Motor Carrier Safety Administration on Wednesday published a final rule that updates the ...