AIR BRAKES CDL PRACTICE TEST - OKLAHOMA
21.
Air brakes are 3 different braking systems: service brake, parking brake, and _______ brake.
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S-cam
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emergency
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foot
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22.
Most heavy-duty vehicles use:
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triple air brake systems.
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single air brake systems.
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dual air brake systems.
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23.
Excessive use of the service brakes results in overheating. Too much heat can:
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make the brakes stop working.
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cause the brakes to grab.
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cause the brakes apply unevenly.
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24.
When driving in very hot weather, the heat will increase the chances of:
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loss of hydraulic pressure.
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tire failure.
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ABS malfunction.
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25.
In newer vehicles with air brakes, you put on the parking brake:
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using a diamond-shaped, yellow, push-pull control knob.
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placing the transmission in Park.
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using a P-shaped, yellow control knob.
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