IDAHO CDL AIR BRAKES PRACTICE TEST
16.
To make the brakes work, air brakes use:
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nitrogen.
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compressed air.
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hydraulic air.
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17.
To perform an applied leakage test, the vehicle’s air pressure should be built up to maximum pressure. Check the air gauge to see that the air pressure should drop no more than:
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3 psi for single vehicles and 4 psi for a combination of 2 vehicles.
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2 psi for single vehicles and 5 psi for a combination of 2 vehicles.
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1 psi for single vehicles and 3 psi for a combination of 2 vehicles.
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18.
If your tires are hot, you should NOT:
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drive until you correct the cause of the overheating.
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let air out of the tires so the pressure goes back to normal.
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stop to let the tires cool down.
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19.
To check slack adjusters on S-cam brakes, you should:
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use gloves and pull hard on each slack adjuster you can reach.
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press the brake pedal and listen for any strange noises.
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All of the above.
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20.
When meeting an oncoming vehicle at night, if the other driver does not put their low beams on, you should:
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"get back at the other driver" by putting your own high beams on.
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slow down and look straight ahead in your lane.
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look slightly to the right to avoid looking directly at the lights of the oncoming vehicle.
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