Ontario Air Brake Z Test Practice Questions - Ontario Air Brake (Z Endorsement) Knowledge Test Exam

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A trailer service line ruptures on a spring brake priority trailer and spring brakes remain released. How can trailer braking be applied?

Close the trailer supply valve so trailer spring brakes apply automatically Use the trailer hand valve as a parking brake Cross-connect the gladhands Open every rear shut-off valve

Correct Answer:

Close the trailer supply valve so trailer spring brakes apply automatically

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