What does a signal displaying Green over Red indicate?

A signal displaying Green over Red indicates a Clear Signal. In railway signaling, a green light typically signifies that the track ahead is clear for trains to proceed at normal speed. The presence of a red light below the green indicates that while it is safe to continue, there may be something that requires heightened awareness, such as a cautionary status further down the line.

This combination instructs the train crew that the route is clear and they can maintain their current speed or operate normally, as there are no immediate obstructions on that path. Understanding signal indications is crucial for safe and efficient train operations, ensuring that railroad personnel can make informed decisions when approaching different track conditions.