AIR BRAKES CDL PRACTICE TEST - MONTANA
11.
When coupling, you should:
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be aware that wrong coupling and uncoupling can be very dangerous.
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make sure the sliding fifth-wheel is locked.
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make sure the trailer kingpin is bent.
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make sure the trailer wheels are not chocked.
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12.
If you get stuck on railroad tracks, you should:
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stay in the vehicle and call for help.
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have a helper push your vehicle.
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get out of the vehicle and away from the tracks.
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check the engine compartment quickly.
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13.
Stepping on and off the brake pedal several times:
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may cause air leaks.
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may result in dangerously thin linings.
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reduces the air pressure in the tanks.
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All of the above.
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14.
You should always try to back toward the driver's side because:
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you can more easily correct any steering errors.
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backing toward the left side is more dangerous.
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you can watch the rear of your vehicle out the side window.
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None of the above.
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15.
What is the best way to test the low air pressure warning signal?
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Shut the engine off when you have enough air pressure, turn the electrical power on and step on and off the brake pedal to reduce air pressure to below 60 psi.
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step on and off the brake pedal while the engine is running.
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pump the brakes until the air pressure drops below 45 psi.
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All of the above.
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