A majority of the companies require you to have your CDL permit prior to beginning which means you also need a physical. You can Apply For Paid CDL Training and the recruiters can answer exactly what they require. If you aren't leaving for more than 30 days they will require you to fill out a new application just before you go.
A CDL is required to drive any of the following vehicles:
New! Check out our help videos for a better understanding of our forum features
Do I need a DOT physical and a CDL-A learners permit to apply to trucking companies that will train you? What else do I need?
CDL:
Commercial Driver's License (CDL)
A CDL is required to drive any of the following vehicles:
DOT:
Department Of Transportation
A department of the federal executive branch responsible for the national highways and for railroad and airline safety. It also manages Amtrak, the national railroad system, and the Coast Guard.
State and Federal DOT Officers are responsible for commercial vehicle enforcement. "The truck police" you could call them.