Single-unit air brakes practice quiz

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Single-unit air brakesQuestion 4 of 200

Correct75%3 of 4 answered

Incorrect25%1 of 4 answered

Since approximately when have dual air-brake systems been in use?

AThe mid-1970sCorrect answer

BThe early 1920sYour answer

COnly since 2005

DOnly since 2020

Incorrect.

The guide states that dual air-brake systems have been used since the mid-1970s. (Guide p. 155)

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