CDL License Practice Test

1. Why do most hydraulic brake failures occur?

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

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

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

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

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

7. The 2 types of railway crossings are

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

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

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

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

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

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

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

15. __________ causes most front-wheel skids.

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

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

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

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

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

22. 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.

23. 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 __________.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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