Should not apply the trailer hand brake.
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Should firmly apply the brakes.
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Can straighten the trailer with the parking brake.
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Number of questions: | 20 |
Passing score: | 16 |
Should not apply the trailer hand brake.
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Should firmly apply the brakes.
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Can straighten the trailer with the parking brake.
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May lean during turns.
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May add extra support during turns.
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May be easier to steer during turns.
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Supply air to the trailer.
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Activate the emergency brake.
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Disconnect the glad hands.
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Relay
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Supply
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Emergency
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Checking for moving air inside of each trailer.
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Listening for air at the rear shut-off valve.
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Feeling for air at the front shut-off valve.
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Are usually shorter than single commercial vehicles.
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Usually require less skill to drive than single commercial vehicles.
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Usually require more skill to drive than single commercial vehicles.
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Leave the service line valve open.
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Remove the relay valves.
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Close the emergency line valve.
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