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Single-unit air brakes practice quiz

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Single-unit air brakesQuestion 13 of 200
Correct46%6 of 13 answered
Incorrect54%7 of 13 answered
Single-needle and dual-needle air-pressure gauges
Read both primary and secondary pressures.

What does a two-needle dashboard air-pressure gauge normally display?

APrimary and secondary service-reservoir pressuresYour answerCorrect answer
BLeft and right tire pressures
CEngine oil and coolant pressures
Correct.

A two-needle gauge lets the driver monitor both service-reservoir circuits. (Guide p. 157)

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