CDL Practice Test Quiz

55 Questions | Attempts: 34426

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CDL Practice Test Quiz - Quiz

Can you pass this CDL practice test quiz? Prepare yourself to get your CDL A license. Become a great truck driver and get your license with ease by practicing the CDL test before you actually take it. These questions are for your practice. You will get an idea of how well you are prepared for an actual CDL test and how much more you need to learn. Also, you will get more knowledge from here. All the best to you!


Questions and Answers
  • 1. 
    Which of the following is true about how to mark a stopped vehicle?
    • A. 

      Keep the vehicle taillights on.

    • B. 

      If you are stopped longer than 10 minutes, put out reflective triangles at 10, 100 and 200 feet from the vehicle.

    • C. 

      Place a triangle back beyond a hill that prevents oncoming traffic from seeing your vehicle within 250 feet.

    • D. 

      Don't use the four-way flashers in daylight.

  • 2. 
    When traveling down a steep hill, how should you use your brakes? 
    • A. 

      Pump the brakes lightly.

    • B. 

      Pump the brakes using lots of pressure.

    • C. 

      Light, even, and steady pressure.

    • D. 

      Use strong pressure that increases as you move downward.

  • 3. 
    What can cause you to skid?
    • A. 

      Over accelerating

    • B. 

      Turning too slowly

    • C. 

      Not using your brakes

    • D. 

      All of the above

  • 4. 
    In a pre-trip inspection, what should you check for in your wheels and rims? 
    • A. 

      Look for rust around wheel nuts, which indicates looseness.

    • B. 

      Cracked or damaged wheels or rims.

    • C. 

      Mismatched or bent lock rims.

    • D. 

      All of the above.

  • 5. 
    Retarders:
    • A. 

      Provide emergency braking.

    • B. 

      Apply extra braking power to the non-drive axles.

    • C. 

      Help slow the vehicle and reduce brake wear.

    • D. 

      Prevent skidding.

  • 6. 
    During a pre-trip inspection, check your brakes and suspensions system for: 
    • A. 

      Brake shoes and pads with fluid in them.

    • B. 

      Shoes worn thinner than 1/4 inch.

    • C. 

      Cracked, missing, or broken parts.

    • D. 

      All of the above.

  • 7. 
    When traveling at highway speed, you should look ahead: 
    • A. 

      1/8 mile.

    • B. 

      1/32 mile.

    • C. 

      1/4 mile.

    • D. 

      1/10 mile.

  • 8. 
    In a pre-trip inspection, what should your tires look like? 
    • A. 

      Tires are not mismatched in size and ply, and tires are not work or damaged.

    • B. 

      Tread depth should be less than 4/32 inch on the front tires, and 2/32 inch on all other tires.

    • C. 

      Dual tires should be touching.

    • D. 

      All of the above.

  • 9. 
    What is important to know about loading cargo? 
    • A. 

      Make sure that the cargo is low and even.

    • B. 

      Put lighter cargo toward the back.

    • C. 

      The higher the center of gravity, the safer the cargo is.

    • D. 

      All of the above.

  • 10. 
    On the freeway during rush hour where most cars are going 35 miles per hour, the safest speed for your vehicle is: 
    • A. 

      20 miles per hour.

    • B. 

      25 miles per hour.

    • C. 

      35 miles per hour.

    • D. 

      45 miles per hour.

  • 11. 
    You can use water on what type of fires?
    • A. 

      Electrical fires.

    • B. 

      Gasoline fires.

    • C. 

      Tire fires.

    • D. 

      All of the above.

  • 12. 
    Federal and state laws prohibit driving an unsafe vehicle, so you should make sure that you fix which of the following problems?
    • A. 

      A small leak of power steering fluid.

    • B. 

      Steering wheel play of more than 10 degrees (2 inches on a 20 inch wheel).

    • C. 

      A leak in the exhaust system.

    • D. 

      All of the above.

  • 13. 
    What can cause a truck fire?
    • A. 

      Tires with low pressure.

    • B. 

      Electrical short circuit.

    • C. 

      Flammable cargo.

    • D. 

      All of the above.

  • 14. 
    Use the B:C fire extinguishers on:
    • A. 

      Burning liquids and electrical fires.

    • B. 

      Wood and paper fires.

    • C. 

      Cloth fires.

    • D. 

      All of the above.

  • 15. 
    At night you should always:
    • A. 

      Watch the vehicles that are approaching.

    • B. 

      Make sure that your stopping distance is within your sight distance.

    • C. 

      Driver faster with low beams than high beams.

    • D. 

      All of the above.

  • 16. 
    What is important to remember about using mirrors?
    • A. 

      Even when using mirrors, there may be "blind spots".

    • B. 

      You should check your mirrors twice before making a lane change.

    • C. 

      Convex mirrors make things look closer.

    • D. 

      Look in the mirror for several seconds each time.

  • 17. 
    Who is responsible for making sure that cargo is not overloaded?
    • A. 

      The driver.

    • B. 

      State and federal agents.

    • C. 

      The shipper.

    • D. 

      All of the above.

  • 18. 
    During hot weather, your tires:
    • A. 

      Can be cooled by driving if they overheat.

    • B. 

      Decrease in air pressure as the weather gets warmer.

    • C. 

      Should be inspected every 100 miles or two hours.

    • D. 

      All of the above.

  • 19. 
    If your hydraulic brakes go out, what should you do?
    • A. 

      Try pumping the brakes to generate pressure.

    • B. 

      Downshift.

    • C. 

      Use the parking brake.

    • D. 

      All of the above.

  • 20. 
    Sign(s) of tire failure is(are):
    • A. 

      A loud bang.

    • B. 

      Heavy steering.

    • C. 

      Vibration.

    • D. 

      All of the above.

  • 21. 
    While driving, you should look ahead:
    • A. 

      1 to 3 seconds.

    • B. 

      6 to 9 seconds.

    • C. 

      12 to 15 seconds.

    • D. 

      20 to 25 seconds.

  • 22. 
    Whenever you are tailgated you should:
    • A. 

      Increase the space in front of you.

    • B. 

      Go faster.

    • C. 

      Slow down.

    • D. 

      Flash your taillights.

  • 23. 
    Hydroplaning:
    • A. 

      Occurs when water or slush forms a film between the tires and the road.

    • B. 

      Can occur at any speed.

    • C. 

      Is more likely to occur when tire pressure is low.

    • D. 

      All of the above.

  • 24. 
    When using retarders, what is a major concern?
    • A. 

      They cause extra brake wear.

    • B. 

      They may cause the drive wheels to skid when the traction is poor.

    • C. 

      Their use may be illegal on some highways.

    • D. 

      They can cause the steering axle brakes to quit.

  • 25. 
    Speed and weight have what type of effect on stopping distance?
    • A. 

      Empty trucks have a shorter stopping distance.

    • B. 

      When you double your speed, it will take three times the distance to stop.

    • C. 

      The heavier the vehicle, the more the brakes have to stop.

    • D. 

      All of the above.

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