OK CDL AIR BRAKES PRACTICE TEST
21.
The parking brake:
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should be used when you need to apply the brakes firmly.
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should be used whenever you park.
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should be used when driving in bad weather.
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22.
How many reflective triangles/emergency reflectors should you carry?
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2
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3
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4
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23.
A broken exhaust system:
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poses no threat to the driver.
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can let poisonous carbon monoxide to leak into the cab.
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can improve fuel efficiency.
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24.
It may not be safe to operate at legal maximum weights:
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during bad weather or in mountains.
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on two-way streets.
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in hot weather.
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25.
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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