Q.1
Bobtail tractors are ____ to stop than tractors attached to full semitrailers.
Q.2
Pull out the trailer air supply control to test:
Q.3
When glad hands are coupled, the seals should be pressed together at a ____ angle.
Q.4
Before backing your tractor under the trailer, make sure your trailer brakes are:
Q.5
If a trailer begins to skid, the driver should:
Q.6
While inspecting a coupling, you should go under the trailer and:
Q.7
A combination vehicle has:
Q.8
Compared to other commercial motor vehicles, combination vehicles need more space on the road because they are longer and they:
Q.9
If a trailer begins to jackknife, the driver:
Q.10
Failure to keep the fifth wheel plate properly greased could:
Q.11
In a sudden turn, the ____ trailer is the most likely to turn over.
Q.12
Rollovers happen when drivers:
Q.13
The service air line is often controlled by the foot brake and is attached to the ____ valves.
Q.14
Proper coupling technique:
Q.15
The emergency air line:
Q.16
The ____ trailer is the most likely to turn over if a driver takes a turn too quickly.
Q.17
When traveling more slowly than 40 mph, maintain at least ____ of following distance per every 10 feet of your vehicle.
Q.18
Using the trailer hand brake while experiencing a trailer jackknife will:
Q.19
____ are the cause of more than half of all accident-related truck driver deaths.
Q.20
When braking with ABS, you should:
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