CDL License Practice Test

The following quiz will help you prepare for your CDL license test.
Read each question carefully and select the correct answer below.

1. True or False: Braking in a curve is dangerous because it is easier to lock the wheels and cause a skid.

2. __________ and duals that touch are 2 causes of tire fires.

3. __________ causes most front-wheel skids.

4. BAC is determined by the amount of alcohol you drink, how fast you drink it and your __________.

5. __________ is the number one cause of injury and death in roadway work zones.

6. True or False: A low center of gravity means you are more likely to tip over.

7. __________ is used in the front, back, and/or sides of a piece of cargo to keep it from sliding.

8. True or False: Stab braking, can only be done in vehicles with antilock brake systems (ABS).

9. The use of brakes on a long and/or steep downgrade is only a supplement to the braking effect of __________.

10. Every registered motor vehicle must have at least 2 mirrors, including 1 attached to the left-hand side, and located to give a clear view of the roadway to the rear for a distance of at least __________.

11. True or False: Strong winds make it difficult to stay in your lane. The problem is usually worse for heavier vehicles.

12. The value specified by the manufacturer as the loaded weight of a combination (articulated) vehicle.

13. Large vehicles can hit other vehicles or objects during turns because of wide turning and __________.

14. __________ are signs put on the outside of a vehicle that identify the hazard class of the cargo.

15. The total weight of a single vehicle including its load.

16. You may __________ drink while on duty, nor consume any intoxicating beverage, regardless of its alcohol content, within 4 hours before going on duty.

17. True or False: The amount of brake pressure you need to stop the vehicle will depend on the speed of the vehicle and how quickly you need to stop.

18. Why do most hydraulic brake failures occur?

19. On flatbed trailers cargo should have at least one tie-down for each __________ of cargo.

20. True or False: Federal and state laws require that drivers inspect their vehicles.

21. When communicating HAZMAT risks, the shipper uses a shipping paper and __________-shaped hazard labels to warn dockworkers and drivers of the risk.

22. You need at least ______ inch tread depth in every major groove on front tires. You need 2/32 inch on other tires.

23. A hazard is any road condition or other road user (driver, motorcyclist, bicyclist, and pedestrian) that is a possible __________.

24. True or False: Many large vehicles have __________ mirrors that show a wider area than flat mirrors.

25. True or False: You should use low beams whenever you can.

26. True or False: It’s OK to help out others by signaling when it is safe to pass.

27. If you find yourself being tailgated, you can do this to reduce the chances of an accident:

28. Because you cannot see everything behind your vehicle, backing is __________ dangerous.

29. The round warning sign placed ahead of a public railroad-highway crossing is colored __________.

30. __________ is a thin layer of ice that is clear enough that you can see the road underneath it.

31. True or False: Stopping is not always the safest thing to do in an emergency.

32. By far the most common skid is one in which the __________ lose traction through excessive braking or acceleration.

33. True or False: There are 2 basic reasons for covering cargo, to protect people from spilled cargo and to protect the cargo from weather.

34. True or False: Forcing an automatic transmission into a lower gear at high speed could damage the transmission and also lead to loss of all engine braking effect.

35. Use high beams when it is safe and legal to do so. Use them when you are not within __________ of an approaching vehicle.

36. Rust around wheel nuts may mean the nuts ___________.

37. The 2 types of railway crossings are

38. There are 3 good rules for using turn signals, which of the following are included in these 3 rules.

39. After starting, inspect the cargo and its securing devices again within the first __________ after beginning a trip. Make any adjustments needed.

40. They reduce brake wear and give you another way to slow down.


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