Each state requires that those seeking to obtain a CDL license must first pass a test of generalized trucking knowledge, it is required you ass the general knowledge test before proceeding to gain additional CDL endorsements. The CDL general knowledge test is a written test designed to assess your competence and level of trucking knowledge and covers the material presented any CDL handbook. The test covers all aspects of general trucking knowledge required to attain your CDL license including, driving safely, transporting cargo safely, and performing pre-trip vehicle inspections, air brakes, and passenger and combination vehicles.
The material covered on the CDL general knowledge test is practically the same in every state to ensure that each CDL licensed driver is completely aware of the laws and requirements regardless of the license issuing state. Each driver wishing to successfully earn their CDL license must achieve an 80% passing score on the general knowledge test.