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 30 of 200

Correct23%7 of 30 answered

Incorrect77%23 of 30 answered

What application pressure do steering-axle brakes receive when a bobtail proportioning system is active?

ANo pressure

BOne-quarter of the selected pressure

CFull application pressureYour answerCorrect answer

DOne-half of the selected pressure

Correct.

The proportioning system reduces drive-axle pressure while leaving full application pressure at the steering axle. (Guide p. 174)

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