When train approach warning is used to protect more than one employee, what equipment must the watchman have?

In situations where train approach warning is necessary to protect multiple employees, having a whistle or air horn is crucial. This equipment allows the watchman to provide audible warnings to alert employees about the oncoming train. The sound from a whistle or air horn can travel a considerable distance and effectively capture attention, ensuring that all personnel are informed and can take the necessary precautions in a timely manner.

Using a whistle or air horn is a standard safety measure in the railroad industry, as visual signals may not always be adequate in alerting individuals who may be focused on their tasks or if there are obstructed views. This proactive approach to safety helps in reducing the risk of accidents and enhances overall situational awareness among crew members working in proximity to active tracks.

While communication devices like radios, personal protective equipment, and emergency supplies have their importance in safety protocols, in this specific context of alerting multiple workers about an approaching train, a whistle or air horn is the designated equipment for the task.