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. 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 __________.

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

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

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

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

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

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

9. 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.

10. __________ causes most front-wheel skids.

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

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

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

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

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

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

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

18. 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.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

33. Why do most hydraulic brake failures occur?

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

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

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

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

38. The 2 types of railway crossings are

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

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


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