For a CDL Group A driver's license, a general knowledge written test and a combination vehicle written test are required. For a CDL Group B or C driver's license, only the general knowledge written test is required. A written test is required for each CDL endorsement (H-Hazardous Material, N-Tank, P-Passenger, S-School Bus, and T-Double Trailers.) If the vehicle you will be driving is equipped with air brakes, an air brake knowledge written test is required. I f you are applying for a hazardous materials endorsement, you must present a    Federal Security Threat Assessment. 

A driving skills test consisting of a Pre-trip Vehicle Inspection Test, a Basic Vehicle Control Skills Test and an On-road Driving Test must be successfully completed through a   Road Skills Testing Organization.

For more complete information about obtaining a CDL, you may download a

> Commercial Driver License Manual
> Back to Commercial Drivers License FAQ's
> Additional Commercial Driver's License Related Information
> TSA Hazmat Endorsement Threat Assessment Program

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