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1. 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)
2. The air brake leakage rate for a combination vehicle (engine off, brakes off) should be less than___ psi per minute
3. Your emergency air line breaks or gets pulled apart while you are driving. The loss of pressure will cause the:
4. Off-tracking or cheating causes of which of these to follow the wider pass while making a turn?
5. To stop a trailer skid you should:
6. The safest way to make turn without entering another traffic lane is:
7. What will happen if the air lines are crossed when you hookup to an old trailer?
8. If the brakes are not released when you pushed the trailer air supply valve you should:
9. You should not back a tractor under a trailer until the whole air system is:
10. You are coupling tractor to a semitrailer. You have connected the airlines. Before backing under the trailer you should:
11. When driving a set of doubles it is necessary to close which shut off valve in the last trailer
12. When connecting the glad hands press the two seasl with the coupler togethre at what degree to each other>
13. A tractor with a _____ trailers requires the shortest amount of stopping distance.
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. Off-tracking or cheating causes of which of these to follow the wider pass while making a turn?
16. The fifth wheel locking lever is not locked after the jaws close around the king pin. This means that:
17. While checking if the trailer is securely coupled to the trailer the landing gears should be:
18. The iron trailer supports are up and the trailer is resting on the tractor. Make sure:
19. The air lines on a combination vehicles are often colored to prevent then from mixing up. The emergency line is ______, the service line is_____-
20. You have pushed the trailer air supply valve. You should not back a tractor under a trailer until the whole air system is: