Under 49 CFR Part 220, a railroad's wayside defect detector (e.g., hot bearing detector) verbally reports an alarm to a train. The dispatcher's role in communicating the alarm typically is to:
- AIgnore detector alarms — they are between the detector and the train
- BAcknowledge the alarm, coordinate any required inspection stop, and document the event pe…
- COrder the train to immediately uncouple the suspect car at the next siding without inspec…
- DCancel all authorities for the rest of the shift