Blue signals that have been placed by the car department can be removed by :

• A. The RTC supervisor
• B. Only the craft or group who place them
• C. Any employee on duty
• D. The track supervisor

Answer: (B)

Blue signals placed by the car department are a protection measure for ongoing work. The crew that places them is responsible for safeguarding that specific work area and for knowing exactly when the work is finished and it’s safe to remove the protection. Allowing someone else to remove the signals could lead to removing protection too soon or without full awareness of the current conditions, creating a serious safety risk. While supervisors may oversee operations, they do not carry the authority to remove blue signals placed by the car department. Similarly, any employee on duty might not have complete knowledge of the work status. Therefore, the proper person to remove these blue signals is the craft or group that placed them.