Prepare for the CDL - Commercial Driver's License exam with our free practice test modules. Each quiz covers key topics to help you pass on your first try.
Try these questions from our free CDL practice tests. The correct answer and an explanation follow each question.
What is the correct school bus policy regarding backing the vehicle?
Answer: B. Backing should be avoided whenever possible; if unavoidable, a qualified spotter must be used
CDL school bus guidelines state that drivers should plan routes to avoid the need to back up entirely. When backing is unavoidable, a spotter who maintains eye contact with the driver must guide the maneuver from outside the bus.
While driving a large vehicle, it is often difficult to see whether a vehicle is close behind you. Which of the following is a common reason someone may tailgate a driver of a large vehicle?
Answer: C. Bad weather or if the driver of the large vehicle is travelling too slowly.
Tailgating a large vehicle is dangerous and often occurs due to specific driving conditions or driver behavior. Drivers may tailgate in bad weather because visibility is reduced, making them feel they need to be closer to see the vehicle ahead. Additionally, if the large vehicle is traveling too slowly for the tailgater's preference, they might follow too closely out of impatience, increasing the risk of a collision.
What should you do if you become drowsy while driving a commercial vehicle?
Answer: A. Pull off the road safely and sleep until you are rested
If drowsiness occurs, the only safe action is to stop and rest. Drowsiness is a critical safety hazard — studies show that drowsy driving impairs reaction time as severely as drunk driving. Opening windows, turning up the radio, or drinking coffee are not reliable remedies and can create a false sense of security.
A Class A CDL is required to operate any combination of vehicles with a gross vehicle weight rating (GVWR) of _____ or more, provided the towed unit has a GVWR exceeding 10,000 pounds.
Answer: B. 26,001 lbs
Federal regulations define a Class A vehicle as any combination with a combined GVWR of 26,001 lbs or more, where the towed vehicle(s) exceed 10,000 lbs GVWR. This threshold distinguishes Class A from Class B and C requirements.
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If you want more targeted practice, the cdl practice test pdf page covers the same material with additional questions and explanations.