This is a Excellent Application on helping you Pass your CDL Commerical Drivers License. Comes with a Practice Exam and Video Training Course.

A Commercial Driver's License (CDL) is a driver's license required to operate any type of vehicle which has a gross vehicle weight rating (GVWR) of 26,001 lb (11,793 kg) or more for commercial use, or transports quantities of hazardous materials that require warning placards under Department of Transportation regulations, or that is designed to transport 16 or more passengers, including the driver. This includes (but is not limited to) tow trucks, tractor trailers, and buses.[1]