That question has a few variables to it. You have to be 18 in order to obtain a CDL ,and at that only be able to run intrastate. So with that said I would say that not many went directly from a class D to a class A.
A CDL is required to drive any of the following vehicles:
The act of purchasers and sellers transacting business while keeping all transactions in a single state, without crossing state lines to do so.
You can go from any class to A, that you want - provided you get the TRAINING YOU NEED in order to pass the written and skills test.
Don't know anyone that jumped into an 18-wheeler - and just passed a driving test without practice.
Most jurisdictions require you to hold a "regular drivers license" for at least a year, before obtaining a CDL.
I've had a DL since '76 - but just got my CDL in '09. And I did go to a 9 week/360 hour course at a local VoTech to get it (shame I haven't actually USED IT yet).
Rick
A CDL is required to drive any of the following vehicles:
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Has anyone here gone directly from obtaining their Class D license to obtaining their Class A?
or has most people had their Class D for years and then decided to obtain a Class A?