What is the maximum speed allowed for restricted speed inside interlockings?

The maximum speed allowed for restricted speed inside interlockings is 15 mph. This limit is set to ensure the safety of train operations in areas where complex train movements occur, and where the possibility of encountering other trains or track workers is heightened. Restricted speed allows operators to react appropriately to signals, switches, and other operational conditions, making it critical for maintaining safety in these zones.

When trains operate at restricted speed, they must be prepared to stop short of any obstruction, which aligns with the intention of maintaining safety in interlockings where multiple tracks and paths intersect. The specified limit of 15 mph is standardized to provide a consistent safety measure across all operations, allowing crews to operate within a predictable and manageable speed for navigating the potentially complicated environment of interlockings.