KANSAS CDL AIR BRAKES PRACTICE TEST
21.
The low pressure warning signal will generally activate when the air pressure falls between:
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30–35 psi.
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55–75 psi.
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85–100 psi.
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80–85 psi.
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22.
The application pressure gauge shows:
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how much air pressure you are applying to the brakes.
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how much pressure is in the air tanks.
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how much pressure the relay valves should send to the trailer brakes.
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All of the above.
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23.
To apply the parking brakes:
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place the parking brake control knob in Neutral.
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pull the parking brake control knob out.
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push the brake pedal three times.
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push the parking brake control knob in.
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24.
The air tanks should be drained completely to remove:
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carbon monoxide.
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the radiator cap.
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water and oil.
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air.
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25.
The total stopping distance for vehicles with air brake systems is made up of __ different factors.
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2
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3
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4
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5
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