PA CDL AIR BRAKES PRACTICE TEST
11.
On any upgrade, gravity:
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doubles your speed.
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slows you down.
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doesn't affect your speed.
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speed you up.
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12.
Distracted driving may be caused by _________ while driving.
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maintaining constant speed
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listening to music
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eating
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All of the above.
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13.
Your vehicle has hydraulic brakes. When you press the brake pedal while driving and the pedal goes to the floor, remember that:
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shifting into neutral may help slow the vehicle.
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pumping the brake pedal may generate enough hydraulic pressure to stop the vehicle.
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the parking brake should never used to slow the vehicle.
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All of the above.
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14.
If your vehicle has dual parking control valves, you can use pressure from a separate tank to:
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balance the service brakes while you are parked.
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park better.
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release the spring brakes so you can move the vehicle in an emergency.
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None of the above.
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15.
The spring brakes come on:
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when main air pressure is lost.
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when you lose ABS control.
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when air pressure in both air brake systems rises to a value set by the manufacturer.
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when you bring the vehicle to a complete stop right away.
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