Q.1
What is a tractor protection valve?
Q.2
In a combination rig, it is best to make:
Q.3
What is off-tracking?
Q.4
When braking while pulling a trailer equipped with anti-lock brakes, you should:
Q.5
A driver should test the tractor protection valve by:
Q.6
Pushing in the trailer air supply control will:
Q.7
When should the trailer hand valve be used?
Q.8
What happens when the wheels of a trailer lock up?
Q.9
During a trip, which shut-off valves should be open?
Q.10
If your vehicle gets stuck on railroad tracks, you should:
Q.11
If color-coded, which color is used to identify service lines?
Q.12
When lightly loaded, combination vehicles:
Q.13
Combination vehicles need extra space on the road because they:
Q.14
The service air line is attached to the:
Q.15
An air supply control in its "emergency" position will:
Q.16
If the emergency air line loses pressure:
Q.17
Before beginning a trip, you should:
Q.18
Rollovers happen when:
Q.19
Which of the following types of vehicles is most prone to the “crack-the-whip" effect?
Q.20
If a load is placed on one side of a trailer, the trailer:
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