AIR BRAKES CDL PRACTICE TEST - WYOMING
21.
In vehicles with air brakes, the two markings on a front brake limiting valve are:
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high and low.
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wet and dry.
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normal and slippery.
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left and right.
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22.
The air compressor is connected to:
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the transmission.
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the engine.
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the suspension system.
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the radiator.
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23.
You are driving a vehicle with air brakes when the low air pressure warning light and buzzer come on. You should:
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activate your hazard lights and drive to the nearest place where you can stop.
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apply the brakes as hard as you can.
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pull off the road and stop immediately.
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slow down and test your brakes.
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24.
Overloading a vehicle with cargo can have negative effects on all of the following except:
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Speed control
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Braking
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Steering
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Weight limits
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25.
Empty trucks:
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have less traction.
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are higher than loaded trucks.
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require greater stopping distances.
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All of the above.
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