Combination air brakes practice quiz

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Combination air brakesQuestion 30 of 200

Correct13%4 of 30 answered

Incorrect87%26 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.