NEW MEXICO CDL AIR BRAKES PRACTICE TEST
21.
With the air pressure built up to governor cutoff, the maximum leakage rates per minute after the initial pressure drop are:
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1 psi for single vehicles and 2 psi for a combination of 2 vehicles.
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5 psi for single vehicles and 6 psi for a combination of 2 vehicles.
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3 psi for single vehicles and 4 psi for a combination of 2 vehicles.
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22.
A low air pressure warning signal:
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is required on all vehicles without air brakes.
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is optional on vehicles with air brakes.
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is required on vehicles with air brakes.
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23.
If your ABS fails:
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the first step is to get the vehicle off the road and stop.
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you will still have normal brake functions.
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your tires might grab unexpectedly and you could lose control.
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24.
Front brake limiting valves were used to:
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reduce your speed so further braking or shifting is not required.
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reduce the chance of the front wheels skidding on slippery surfaces.
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prevent overheating of the front tires.
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25.
If you are feeling sleepy, you should:
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pull off the road and rest.
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slow down.
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get some coffee.
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