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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 22 of 200
Correct55%12 of 22 answered
Incorrect45%10 of 22 answered

What is the correct low-air-warning result during the single-unit pre-trip test?

AIt activates at or above 60 psi as pressure is pumped down.Correct answer
BIt activates only below 20 psi.
CIt stays off until the spring brakes apply.Your answer
Incorrect.

Continue pumping down and verify the light, buzzer or other warning activates at or above 60 psi. (Guide p. 218)

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