Who would be the most helpful employees for a crew unable to move a disabled train in regular passenger service?

The most helpful employees for a crew unable to move a disabled train in regular passenger service would be the road car inspector and train operator instructor.

The road car inspector plays a critical role in assessing and diagnosing issues relating to the train cars. Their expertise in mechanical systems and troubleshooting empowers them to identify and possibly rectify problems that may be preventing the train from moving.

Meanwhile, the train operator instructor has the responsibility of training operators in proper procedures and protocols. This individual would be knowledgeable about various operational maneuvers, safety protocols, and emergency procedures, which would be vital in managing the situation effectively. Their insight into how to operate the train under unusual circumstances could provide the crew with immediate strategies or solutions.

Together, the road car inspector's technical skills and the train operator instructor's operational knowledge contribute effectively to resolving the issues that prevent the train from moving, ensuring both the safety of passengers and the timely return to normal service.