AIR BRAKES PRACTICE TEST - NEW MEXICO
6.
The low pressure warning signal will generally activate when the air pressure falls between:
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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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7.
An anti-lock braking system (ABS):
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helps you avoid wheel lock up.
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helps you avoid skids caused by over braking.
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All of the above.
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8.
How many reflective triangles/emergency reflectors should you carry?
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3
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2
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4
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9.
How do you test hydraulic brakes for leaks?
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Pump the brake pedal three times, then apply firm pressure to the pedal and hold for five seconds. The pedal should not move.
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Pull forward against parking brake to make sure the hydraulic brakes holds.
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Pump the brake pedal ten times and see if it holds.
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10.
What is the best way to test the low air pressure warning signal?
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step on and off the brake pedal while the engine is running.
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pump the brakes until the air pressure drops below 45 psi.
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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 to reduce air pressure to below 60 psi.
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