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

What is the role of the secondary circuit in a dual air system?

It typically supplies air to control the front axle brakes and other designated components It acts as a backup compressor in case the main one fails It supplies air only to the trailer emergency lines It controls the air suspension pressure exclusively

Correct Answer:

It typically supplies air to control the front axle brakes and other designated components

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