Mumbai suburban trains upgrade SILAS signal system for error-free operations

Central Railway has upgraded the Signal Location Announcement System (SILAS) in all local trains on the Mumbai suburban network to act as an electronic co-pilot, announcing the number and position of upcoming signals, including whether they are on the left, extreme left, right, or extreme right. The GPS-based system provides audio alerts 350 metres and 250 metres before approaching a signal and, in the case of a yellow signal, repeatedly advises, 'Be careful, next signal is Red' until the next green or double-yellow aspect appears. It includes pre-loaded GPS coordinates, signal locations and route-specific audio recordings; before starting a trip, the train manager selects the appropriate line (up or down local and through lines). SILAS is also being developed to announce upcoming halt stations 500 metres and 250 metres before arrival. The upgrade is expected to help analyse motormen's driving behaviour by monitoring instantaneous speed at critical locations and enable real-time train tracking and speed monitoring of EMU trains for operational control, contributing to Central Railway's goal of 'Zero SPAD' in suburban operations.