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. 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 __________.

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

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

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

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

6. 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.

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

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

9. __________ causes most front-wheel skids.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

36. Why do most hydraulic brake failures occur?

37. The 2 types of railway crossings are

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

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

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