AIR BRAKES CDL PRACTICE TEST - DELAWARE
6.
The application pressure gauge shows:
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how much pressure is in the air tanks.
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how much air pressure you are applying to the brakes.
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how much pressure the relay valves should send to the trailer brakes.
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All of the above.
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7.
The best way to know what's going on behind and to the sides of your vehicle is to:
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use the rear view camera.
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lean out of the window.
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check your mirrors regularly.
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ask your passenger(s).
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8.
When driving a 60 foot truck at 35 mph in ideal conditions, you should keep at least _______ of space in front of you.
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12 seconds
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6 seconds
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4 seconds
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5 seconds
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9.
Having ABS on only the trailer:
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makes the trailer more likely to roll over.
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still gives you more control over your vehicle during braking.
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makes the trailer more likely to swing out.
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is very dangerous.
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10.
Most heavy-duty vehicles use:
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solid brakes.
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hydraulic brakes.
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air brakes.
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pressure brakes.
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