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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 13 of 200
Correct77%10 of 13 answered
Incorrect23%3 of 13 answered
ICBC guide diagram of a primary-air-system failure on a tractor-trailer
Follow the surviving secondary circuit to the front and trailer brakes.

In the illustrated primary-system failure, which brakes remain available during a foot application?

ANo trailer brakesYour answer
BOnly tractor rear brakes
CTractor front brakes and trailer brakesCorrect answer
Incorrect.

Secondary-system pressure applies the tractor front brakes and still signals the trailer brakes. (Guide p. 176)

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