Air Brake (Q Endorsement) Practice · Question
Scenario 261: Before disconnecting a trailer, the spring brakes on the trailer must be:
Apply trailer spring brakes (park valve in) before disconnecting glad-hands to prevent rollaway. The correct answer is "Applied (park valve in)". This capacity-
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Question: Scenario 261: Before disconnecting a trailer, the spring brakes on the trailer must be:
Answer options:
- Released ✅ Applied (park valve in)
- Removed
- Disabled
Correct answer: Applied (park valve in)
Explanation: Apply trailer spring brakes (park valve in) before disconnecting glad-hands to prevent rollaway. The correct answer is "Applied (park valve in)". This capacity-fill scenario 261 reinforces the same competency for the airbrake bank and follows the certified explanation standard.
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