CDL PRACTICE TEST - GENERAL KNOWLEDGE (IDAHO)
21.
Brake fade results from:
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excessive speeding.
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excessive use of the service brakes.
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excessive wear.
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22.
The air storage tanks:
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are used to hold compressed air.
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are connected to the engine through gears or a v-belt.
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stop the compressor from pumping air.
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23.
Escape ramps:
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can only be used by trucks or passenger vehicles.
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are used to safely leave the highway.
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have been built to stop runaway vehicles on steep downgrades.
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24.
During the after-trip inspection, if you notice anything affecting safety or potentially leading to a mechanical breakdown, you should:
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ask the motor carrier to make a written report.
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make a written report.
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try to fix the problem yourself.
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25.
You should NOT use the parking brakes if:
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the brakes are cold.
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the brakes are very hot.
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the brakes are too dry.
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26.
What is countersteering?
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Turning the steering wheel quickly the other way after steering in an emergency situation.
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Locking your wheels while turning in an emergency situation.
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Staying off the brake while steering to the right to avoid an accident.
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27.
The tractor protection valve:
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keeps air in the brake system should the trailer develop a bad leak.
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prevents the trailer from being accidentally released.
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keeps your wheels from locking up when you brake hard.
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28.
Slippery surfaces usually:
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can cause lack of steering power.
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make it more difficult to stop.
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make it easier to stop.
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29.
When driving at night, to avoid glare from oncoming vehicles you should:
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look directly at lights of oncoming vehicles.
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look slightly to the right at a right lane or edge marking.
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put your own high beams on when other drivers do not put their low beams on.
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30.
No matter how small the cargo is, it should have at least:
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2 tie-downs.
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4 tie-downs.
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1 tie-down.
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