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

What is the purpose of a relay valve in an air brake system?

To signal the governor when pressure drops in the tanks To connect the electrical brake lights when the treadle is applied To speed up the application and release of the rear brakes To direct air between the primary and secondary reservoirs

Correct Answer:

To speed up the application and release of the rear brakes

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