Q.1
How much space should be between the upper and lower fifth wheel?
Q.2
A loss of air pressure in the emergency line will cause:
Q.3
When connecting a converter dolly to a second trailer, the trailer height should be ____ the center of the fifth wheel.
Q.4
In a sudden turn, the ____ trailer is the most likely to turn over.
Q.5
After completing a pre-trip inspection, you should ensure that the:
Q.6
All trailers made after ____ must be equipped with Anti-Lock Braking Systems (ABS).
Q.7
An air supply control lever should be in its "normal" position when you are:
Q.8
In a vehicle equipped with an automatic tractor protection valve, the valve will pop out when:
Q.9
Which of the following will not help prevent a rig from rolling over?
Q.10
Push in the trailer air supply control to:
Q.11
To test the trailer service brakes, you should:
Q.12
During a trip, the ____ should be open.
Q.13
Operating combination vehicles usually requires ­­­­­____ operating single vehicles.
Q.14
To find out if a vehicle that was built before 1998 has an Anti-Lock Braking System (ABS), you can:
Q.15
What does an Anti-Lock Braking System (ABS) do?
Q.16
The emergency air line supplies air to the:
Q.17
The ____ trailer is the most likely to turn over if a driver takes a turn too quickly.
Q.18
If you must cross traffic while driving a combination vehicle, you should:
Q.19
The trailer hand valve should not be used while you are driving because:
Q.20
Keeping cargo centered on a rig can:
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