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/Combination air brakes

Combination air brakes practice quiz

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

Combination air brakesQuestion 13 of 200
Correct69%9 of 13 answered
Incorrect31%4 of 13 answered
ICBC guide diagram of a primary-air-system failure on a tractor-trailer
Follow the surviving secondary circuit to the front and trailer brakes.

In the illustrated primary-system failure, which brakes remain available during a foot application?

ANo trailer brakes
BOnly tractor rear brakes
CTractor front brakes and trailer brakesYour answerCorrect answer
Correct.

Secondary-system pressure applies the tractor front brakes and still signals the trailer brakes. (Guide p. 176)

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.