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Home/Practice quizzes/Single-unit air brakes

Single-unit air brakes practice quiz

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

Single-unit air brakesQuestion 12 of 200
Correct75%9 of 12 answered
Incorrect25%3 of 12 answered

Where may quick-release valves be used besides the front brakes?

AOnly inside the engine oil pan
BOnly between a tire and its rim
COnly in hydraulic master cylindersYour answer
DAt rear brakes, spring parking brakes or other circuits needing rapid exhaustCorrect answer
Incorrect.

Quick-release valves may serve front, rear or spring-brake circuits wherever rapid air exhaust is needed. (Guide p. 159)

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