If an event occurs that would interfere with the safe passage of trains, the employee must take:

• A. Immediate action to stop trains by radio communication to trains and the Dispatcher
• B. Wait for permission from the supervisor
• C. Sound a whistle and continue
• D. Ignore the issue

Answer: (A)

Immediate, coordinated action is required when something could interfere with safe train movement. The fastest and most reliable way to address the hazard is to stop trains by radio communication to the trains and the Dispatcher. This ensures the crews are warned, proper authorities are alerted, and movements can be halted or rerouted safely.

Waiting for supervisor permission can delay action, increasing risk. Simply sounding a whistle and continuing does not stop trains or communicate the hazard to others, so it won’t resolve the safety issue. Ignoring the situation is dangerous and against the rules.