Saskatchewan Air Brake Practice Questions - Saskatchewan Air Brake (Endorsement A) Exam

In a dual air system, what is the role of the primary circuit?

It typically supplies air to control the front axle brakes only It typically supplies air to control the rear brakes of the tractor It supplies air to secondary accessories like the air horn and seat It controls the parking brake caging mechanisms

Correct Answer:

It typically supplies air to control the rear brakes of the tractor

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