Q.1
What is the tractor protection valve?
Q.2
Bobtail tractors are ____ to stop than tractors attached to full semitrailers.
Q.3
If color-coded, which color is used to identify service lines?
Q.4
When braking with ABS, you should:
Q.5
If an air supply control is in its "emergency" position:
Q.6
If unsure if a trailer has an Anti-Lock Braking System (ABS), you can:
Q.7
A trolley valve:
Q.8
The service air line is often controlled by the foot brake and is attached to the ____ valves.
Q.9
If a load is placed on one side of a trailer, the trailer:
Q.10
In an empty combination vehicle, the stiff suspension springs and strong brakes will have:
Q.11
What is the Johnson bar?
Q.12
What is a tractor protection valve?
Q.13
When you are pulling a trailer, the air supply control lever should be in its ____ position.
Q.14
When backing a trailer, you must turn the steering wheel:
Q.15
Combination vehicles:
Q.16
During a trip, the ____ should be open.
Q.17
Before a trip, you can make sure air flows to all trailers by:
Q.18
Pushing in the trailer air supply control will:
Q.19
If you use the trailer hand brake while your trailer is skidding, it will:
Q.20
Place the trailer air supply control in its "emergency" position to test:
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