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Home/Practice quizzes/Combination air brakes

Combination air brakes practice quiz

Choose an answer, read the explanation, then continue to the next question. Your results include a review of every answer.

Combination air brakesQuestion 32 of 200
Correct28%9 of 32 answered
Incorrect72%23 of 32 answered
ICBC guide illustration of red and blue glad-hand couplers
Red supplies reservoir air; blue carries the braking signal.

In the illustrated glad-hand pair, which line is normally identified by red?

AThe supply or emergency lineCorrect answer
BThe ABS electrical line
CThe control or service lineYour answer
Incorrect.

Red identifies the supply or emergency line that charges the trailer reservoirs. (Guide p. 168)

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Study aid only. These are not official ICBC exam questions, and practice scores do not predict an official test result.