ColumbiaTraining Systems Ltd.
Talk to an instructor(604) 729-5333
Language

Read in your language

Google Translate opens in a new tab. Some page content may remain in English. For quizzes and calendars, try your browser’s Translate option.

Browser translation help

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 15 of 200
Correct60%9 of 15 answered
Incorrect40%6 of 15 answered
Quick-release valve between the foot valve and front brake chambers
The nearby exhaust path speeds brake release.

Why is the quick-release valve installed close to brake chambers?

ATo increase compressor cut-out pressure
BTo vent chamber air nearby so the brakes release quicklyCorrect answer
CTo hold spring brakes applied during drivingYour answer
Incorrect.

A quick-release valve reduces release lag by exhausting chamber air near the chambers. (Guide p. 158)

Next question

Choose another quiz · ICBC Driving Commercial Vehicles

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