1.
Truck tractors with air brakes built after March 1, 1997, are required to be equipped with:
anti-lock brakes.
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a rear backup camera.
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hydraulic brakes.
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2.
A dual air brake system:
has two separate air brake systems, which use a single set of brake controls.
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has a single air brake system, which uses a single set of brake controls.
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has two separate air brake systems, which use two separate sets of brake controls.
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3.
The supply pressure gauges tell you how much air pressure:
is in the air tanks.
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you are applying to the brakes.
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is going to the brake chambers.
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4.
With brake drums, if brakes become too hot:
your ABS will malfunction.
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the brakes may stop working.
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the brakes will supply too much power to the drive wheels.
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5.
If the spring brakes do not release when you push the trailer air supply control, you should:
check the electrical cables.
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rev or
lug the engine.
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check the air line connections.
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6.
If stopped on a hill, how can you start moving without rolling back?
Partly engage the clutch before you take your right foot off the brake, put on the parking brake if necessary.
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Release the parking brake before you have applied enough engine power to keep from rolling back.
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Press on the gas pedal, even if you have to roll back a little.
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7.
The __________ keeps air from going out if the air compressor develops a leak.
emergency relay valve
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tractor protection valve
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one-way check valve
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8.
The tire load rating is stated:
inside the suspension system.
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on each axle.
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on the side of each tire.
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9.
Before transporting sealed loads, you should check that:
the seal numbers match the placard numbers.
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the load can be inspected.
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the load is properly secured.
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10.
If your vehicle is hydroplaning, you should:
use the brakes to slow down.
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accelerate to get through the water as quickly as possible.
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release the accelerator and push in the clutch.
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