Q.1
At what psi is the safety valve set to open?
Q.2
While inspecting a coupling, you should go under the trailer and:
Q.3
What is a bobtail?
Q.4
When backing up while coupling a trailer, the tractor should be positioned:
Q.5
When you press the brake pedal in a vehicle with S-cam brakes, air pressure pushes out the rod and moves the:
Q.6
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.7
If colors are being used to distinguish glad hands, which color is used for emergency lines?
Q.8
Which type of vehicle is most prone to the “crack-the-whip” effect?
Q.9
Air brakes use ____ to function.
Q.10
If the low pressure warning signal activates while you are driving, you should:
Q.11
What happens when the wheels of a trailer lock up?
Q.12
Rollovers happen when:
Q.13
What happens if the air pressure in a system's air tanks falls below 60 psi?
Q.14
Combination vehicles:
Q.15
What is another name for the service line?
Q.16
Applying the brake pedal causes air pressure to activate an electric switch and:
Q.17
Operating a combination vehicle usually requires ­­­­­____ operating a single vehicle.
Q.18
To help prevent a rollover, cargo should be:
Q.19
What color are ABS malfunction lamps?
Q.20
Before starting down a hill, be sure to:
Q.21
What do air brakes use to make the brakes work?
Q.22
If a trailer begins to skid, the driver should:
Q.23
What is a wig wag?
Q.24
A trailer that is too high:
Q.25
If color-coded, which color is used to identify service lines?
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