AIR BRAKES PRACTICE TEST - OKLAHOMA
6.
To check that spring brakes come on automatically, the first thing to do is to:
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continue to step on and off the brake pedal until the air pressure falls to the manufacturer’s specification.
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turn off the engine, release the parking brake and time the air pressure drop.
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release the parking brake, move the vehicle forward slowly, and apply the brakes firmly.
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7.
What is an important thing to remember about emergency braking?
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Pushing down on the brake pedal as hard as you can will only keep the wheels locked up and cause a skid.
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You should never use stab braking.
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Your natural response (hitting the brakes) is never the right solution.
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8.
The tractor protection valve:
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provides the air supply for the brake system.
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will close automatically if the air pressure drops to a certain level.
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All of the above.
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9.
If the air tanks are not drained:
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the air pressure in the tanks is reduced.
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the water can freeze in cold
weather and cause brake failure.
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your speed must be reduced to 5 MPH below your “safe” speed.
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10.
Perception Distance + Reaction Distance + Brake Lag Distance + Braking Distance = ?
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Stopping Distance - (minus) Brake Fade Distance
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Total Air Pressure
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Total Stopping Distance
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