FL CDL AIR BRAKES PRACTICE TEST
11.
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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pumping the brake pedal may generate enough hydraulic pressure to stop the vehicle.
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shifting into neutral may help slow 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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12.
By pushing the trailer air supply control knob in, you:
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keeps air in the tractor or truck brake system.
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shut the air off and put on the trailer emergency brakes.
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supply the trailer with air.
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supply the tires with air.
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13.
The stop light switch:
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turns on the brake lights when you put on the air brakes.
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warns you when the air supply pressure drops below 55 psi.
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tells you when you need to use your parking brake instead of the service brake.
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should be used to fend off tailgaters.
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14.
If your trucks has a high center of gravity, which of the following is true for curves?
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Reduce your speed to a crawl.
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You should slow down, as your truck can roll over at the posted speed limit for the curve.
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You should travel at the posted speed limit.
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None of the above.
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15.
Which of the following is not a type of retarder?
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Hydraulic
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Pressure
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Electric
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Exhaust
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