Q.1
Shut-off valves:
Q.2
Rollovers happen when:
Q.3
When driving with trailers, you should:
Q.4
When glad hands are coupled, the seals should be pressed together at a ____ angle.
Q.5
Before beginning a trip, you should:
Q.6
Bobtail tractors are ____ to stop than tractors attached to full semitrailers.
Q.7
Maintain a following distance of at least ____ for every 10 feet of your vehicle if you are traveling at a speed under 40 mph.
Q.8
If you are backing and become unsure about your path of travel, you should:
Q.9
When backing up your tractor while coupling it to a trailer, the trailer brakes should be:
Q.10
A combination vehicle has ____ air line(s).
Q.11
Trailers with low underneath clearance can present challenges when driving over:
Q.12
If you press the tractor air supply control and your trailer's spring brakes do not release, you should:
Q.13
If color-coded, which color is used to identify emergency, or supply, lines?
Q.14
If your vehicle gets stuck on railroad tracks, you should:
Q.15
Keeping cargo low can:
Q.16
The best way to recognize that your trailer has started to skid is by:
Q.17
When should the trailer hand valve be used?
Q.18
The emergency air line supplies air to the:
Q.19
All trailers made after ____ must be equipped with Anti-Lock Braking Systems (ABS).
Q.20
In a double or triple combination, the ____ trailer should be directly behind the cab.
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