What should you do if a brake test fails?

• A. Ignore it and continue.
• B. Report immediately, isolate the failure, and follow the dispatcher’s corrective instructions.
• C. Delay reporting until the next dispatcher contact.
• D. Immediately attempt a second test without notifying anyone.

Answer: (B)

When a brake test fails, safety requires immediate action: report the failure to the dispatcher, isolate the defective part of the braking system, and follow the dispatcher's corrective instructions. A failed brake test means you cannot rely on the train to stop as required, creating a real risk of runaways or derailment if the train is moved. By notifying the dispatcher right away, you get proper authorization and guidance for repairs or temporary restrictions, and you prevent unapproved movement. Isolating the fault helps keep the rest of the train safe and allows a controlled resolution—whether that means testing after repair, removing a car from service, or other fixes as directed. Don’t proceed with another test or move the train without clearance, and don’t ignore the fault.