CDL Quizzes Online & Trivia

A comprehensive database of more than 11 CDL quizzes online, test your knowledge with CDL quiz questions. Our online CDL trivia quizzes can be adapted to suit your requirements for taking some of the top CDL quizzes.


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  • You are driving a combination vehicle. If the service air line comes apart but the emergency line stays together, what will happen right away?

  • If you cannot make a turn without entering another traffic lane, you should:

  • When should you use chocks to park a trailer not equipped with spring brakes?

  • What effects can wet brakes cause?

  • How can you avoid wet brake problems?

  • You should let air out of hot tires so the pressure goes back to normal.

  • What are two main things to look for ahead?

  • What is the correct way to view the sides and rear?

  • What does communicating mean in safe driving?

  • When preparing to do a pre-trip inspection you must check to see that the parking brakes are on and/or chocked.

  • When getting in to start the engine and inspect inside the cab you must

  • Look at the guages - the oil pressure gauge should come up to normal within how long after starting the engine?