NEW DELHI (Metro Rail News): Indian Railways has approved the provision of Kavach Version 4.0 on 680 route kilometers of the Rewari-Delhi and Shakurbasti-Bathinda sections (including feeder branch lines) of the Delhi Division, Northern Railway. The project was approved at a cost of ₹260 crore by the Ministry of Railways on Friday, 10 July 2026.
The Ministry of Railways stated that the project is part of the nationwide rollout of Kavach, aimed at enhancing indigenous safety on key high-density routes.
The Tech Enhancements Behind Kavach 4.0
Kavach 4.0 is the definitive, finalized blueprint for India’s nationwide railway safety net. The earlier variant, Kavach 3.2, served as the “Beta testing phase,” which was deployed across 1,465 route kilometers on the South Central Railway. It successfully proved that an indigenous automatic braking system could work to prevent collisions and display signals inside the cockpit. However, the specific technical limitations of Kavach 3.2 forced the development of version 4.0. Kavach 4.0 features a direct interface to modern Electronic Interlocking (EI) platforms, a station-to-station interface using hardwired Optical Fibre Cables (OFC), and the ability to manage aggressive braking curves dynamically. This allows semi-high-speed networks like the Vande Bharat and rapid freight routes to run safely up to 160 km/h.
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The Ministry of Railways emphasized that implementing Kavach Version 4.0 on key Indian Railway routes will boost safety, optimize operations, increase the reliability of train services, and facilitate quicker, tech-enhanced transport for both passengers and freight.
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