Test – Combo Vehicles Test

1.

1.  After you lock the kingpin into the fifth wheel, you should check the connection by pulling.

2. After connecting the air lines but before backing under the trailer, you should.

3. Which statement best illustrates the “crack- the - whip” effect?

4. Where should the tractor be when you inspect the landing gear after uncoupling the trailer?

5. What is the safest way for you to make a turn without entering another traffic lane?

6. To drive a triple combination vehicle, you must have

7. To prevent rollover, cargo should be

8. Combination vehicles take longer to stop when they are empty than when they are fully loaded, because:

9. If your vehicle gets stuck on a railroad track, you should

10. Low- slung vehicles can be risky at railroad crossings because

11. On a double or triple vehicle, which wheels off track the most?

12. When you're pulling doubles or triples , the rear shut-off valve should always be

13. On a trailer, where is the yellow antilock brake (ABS) malfunction lamp located?

14. Even before antilock braking systems (ABS) were required, some vehicles already had them. How can you check if your vehicle has ABS?

15. An antilock braking system (ABS) is useful

16. After coupling, make sure that the airlines are NOT crossed. How should you do this?

17. During uncoupling, you should disconnect the electrical cable and

18. Before you start to uncouple, you must.

19. You can confirm that air is going to all brakes in your trailers by

20. To uncouple a loaded trailer, after the landing gear has made firm contact with the ground, you should

21. If the trailer has antilock brakes (ABS) but the tractor doesn't,

22. To test the tractor protection valve, charge the trailer air brake system, turn off the engine, and

23. If  your test of the tractor protection valve is successful,

24. The tractor protection valve is designed to close automatically when the air pressure falls into the pressure range specified by the manufacturer, typically

25. As part of your vehicle inspection test, if your vehicle is equipped with air brakes and has a trailer, you will inspect the air connections between the truck or tractor and the trailer. Make sure that the ______ are locked in place and free of damage or air leaks.