AIR BRAKES CDL PRACTICE TEST - FLORIDA
16.
When backing a trailer, you should:
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never make pull-ups to reposition your vehicle.
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try to position your vehicle so you can back in a straight line.
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avoid correcting the drift.
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turn the steering wheel in the direction you want to go.
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17.
The __________ keeps air from going out if the air compressor develops a leak.
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one-way check valve
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tractor protection valve
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emergency relay valve
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air compressor drive belt
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18.
You can be sure that your vehicle is equipped with ABS:
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if the vehicle was manufactured after 2010.
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if the vehicle was manufactured after 1998.
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if your company requires the use of antilock brakes in its policies.
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if the vehicle was manufactured after 2000.
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19.
To test the low pressure warning signal, you should:
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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 until the low air pressure warning signal comes on.
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check the air hoses connected to the brake chambers to make sure they aren't cut.
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pump the brakes while your vehicle is running.
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manually let the air out of your brakes and see if the signal comes on.
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20.
Most heavy-duty vehicles use:
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air brakes.
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pressure brakes.
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hydraulic brakes.
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solid brakes.
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