Question 3 of 20
Score: 0/0If you’re driving a combination vehicle and the trailer separates, breaking both air lines, what should happen?
ExplanationIf both air lines break, the trailer’s emergency brakes will automatically apply, and the tractor protection valve will close to prevent air loss from the tractor’s system.
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Did you know? A high, loaded trailer rolls easily — gentle steering and braking is the recurring answer.
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