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

What is the trailer hand valve used for?

Releasing tractor spring brakes while trailer spring brakes stay applied Applying trailer service brakes independently of the towing vehicle brakes Parking the vehicle overnight Emergency stopping on downgrades

Correct Answer:

Applying trailer service brakes independently of the towing vehicle brakes

Access more questions from this quiz

Continue to Ontario Air Brake Z Test Practice Questions - Ontario Air Brake (Z Endorsement) Knowledge Test Exam for more practice questions and the full quiz experience.

Access More Questions