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

Correct30%9 of 30 answered

Incorrect70%21 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 pressureYour answer

CFull application pressureCorrect answer

DOne-half of the selected pressure

Incorrect.

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.