A train has become uncoupled on the main track. What is the proper action?

• A. Stop, secure the uncoupled portion, protect the location, and inform the dispatcher to arrange recovery.
• B. Proceed at reduced speed to the next siding.
• C. Notify the conductor, then continue as normal.
• D. Cut away the remaining locomotive and continue with the main portion.

Answer: (A)

When a train uncouples on the main track, the top priority is safety and coordinating the recovery. Stop immediately, secure the uncoupled portion so it cannot move, protect the location to warn and shield other trains and personnel, and inform the dispatcher to arrange recovery. This sequence prevents any runaway movement, ensures the track remains protected for approaching trains, and gets the right authority and equipment in place to recover the cars safely. Moving to a siding or continuing without dispatcher coordination would create a serious hazard, and cutting away the locomotive would leave the main track unprotected.