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1. What gear should the tractor engine be in after you uncouple the trailer and are inspecting the trailer supports?
2. To unlock the fifth wheel the locking lever shoud be placed in the ____position.
3. If you cannot make a turn without entering another traffic lane:
4. Glad hands are usually connecting which of these?
5. You are coupling tractor to a semitrailer. You have connected the airlines. Before backing under the trailer you should:
6. After you supply air to the trailer, make sure the air lines are not crossed and the trailer brakes are working. This is done by:
7. There are two things that a driver can do to prevent a rollover. They are (1) keep the cargo as close to the ground as possible (2)
8. Which of these statements is true?
9. You are coupling a tractor to a semitrailer and have backed up but are not under it. What should you hook up before backing under?
10. The air lines on a combination vehicles are often colored to prevent then from mixing up. The emergency line is ______, the service line is_____-
11. After you have coupled the trailer you should have to raise the landing gear by using:
12. When backing a tractor under a trailer you should:
13. The tractor protection valve will close and the trailer emergency brakes will come on when there is a major leak in the ____ brake line
14. In normal driving, some drivers use the hand valve before the brake pedal to prevent a jack knife. Which of the statements is true?
15. A driver crosses the air lines when hooking up to an old trailer. What will happen?
16. Air and electrical lines from the tractor to the trailer should be:
17. When you are uncoupling a loaded trailer you should lower the landing gear until it:
18. Which part of the kingpin should the locking jaws close around?
19. Off-tracking or cheating causes of which of these to follow the wider pass while making a turn?
20. Tractor with ______ trailer requires the shortest amount of stopping distance.