AIR BRAKES CDL PRACTICE TEST - CONNECTICUT
11.
The air compressor stops pumping air into the air storage tanks when air tank pressure rises to around:
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250 psi.
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450 psi.
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125 psi.
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100 psi.
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12.
To test the service brake:
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shift your transmission to a low gear, pump the brake pedal three times, then hold it down for five seconds.
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push the brake pedal firmly while slowly moving backward.
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gently try to pull forward with the trailer parking brake on, then release the brake.
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push the brake pedal firmly while going about 5 mph.
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13.
By pushing the trailer air supply control knob in, you:
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supply the trailer with air.
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shut the air off and put on the trailer emergency brakes.
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supply the tires with air.
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keeps air in the tractor or truck brake system.
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14.
The total stopping distance for vehicles with air brake systems is made up of __ different factors.
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3
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2
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4
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5
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15.
If air pressure does not build up fast enough:
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the pressure may drop too low during driving.
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you should put the parking brake on and gently pull against it in a low gear.
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you may be forced to turn off the engine and release the parking brake.
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you should turn the electrical power on and step on and off the brake pedal.
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