KAVACH

KAVACH is a train collision avoidance system developed indigenously by Indian railways. It is speed specific device and can help under limited conditions of speed of the trains in question.

• Development of Kavach started in 2012 under the name Train Collision Avoidance System (TCAS) and completed development in 2022.
• Once implemented, Kavach will be the world's cheapest automatic train collision protection system.
• Union budget of India for the FY 2022-23 allocated fund for speedy implementation of Kavach system on 2000 km track, and sanctioned implementation on 34,000 km track of Golden Quadrilateral rail route which will be implemented by 2027-28.
• Kavach is operational on 65 locomotives, 1445  km route and 134 stations in South Central Railway zone, while implementation on 1200 km is underway, speed that it can work upto is 80km/hr.
• The Kavach automatic protection system will be upgraded to handle 160 kmph top speed before it will be implemented on 3000 km route of New Delhi–Mumbai main line and Howrah–Delhi main lineas part of Mission Raftar project of the Indian Railway.
• System consists of a set of electronic devices and radio frequency identification devices installed in locomotives, tracks, railway signalling system and every stations at a 1 km distance. the system currently communicates with its components via ultra-high radio frequencies while the development of 4g lte based system is underway. kavach alerts when a loco pilot jumps a signal (signal passed at danger -spad), which is the leading cause of train collisions. The system can alert the loco pilot and take control of the brakes and bring train movement to a halt automatically when it notices another train on the same line within a prescribed distance.

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