Southern Railway Tiruchchirappalli division opens bidding for RPF post CCTV networks and large-scale signal gear updates. Projects cover replacements for aged relays, LEDs, VDUs, and cables under system code T-SG-36-I-5,6,7-2026-2027. File digital proposals at www.ireps.gov.in before September 3, 2026, at 14:00 hours.