26. After you have coupled the trailer you should have to raise the landing gear by using:
Low gear.
27. You supply air to the trailer tanks by:
Pushing in the trailer air supply valve.
28. There are two things that a driver can do to prevent a rollover. They are (1) go slow around turns and (2):
Keep the cargo as close to the ground as possible.
29. Why should you be sure that the fifth wheel plate is greased as required?
To prevent steering problems.
30. Your emergency air line breaks or gets pulled apart while you are driving. The loss of pressure will cause the:
Emergency trailer brakes to come on.