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

What was the main purpose of the front axle ratio valve on older commercial vehicles?

To increase the pressure sent to the front brakes during loaded operations To reduce front-wheel braking pressure on slippery surfaces to prevent steering axle lockup To bypass the primary air system during a line failure To isolate the front brakes from the foot valve during bobtail operation

Correct Answer:

To reduce front-wheel braking pressure on slippery surfaces to prevent steering axle lockup

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