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Indian Railways Approves Kavach Version 4.0 for 600+ Route Km
Indian Railways approves the provision of Kavach Version 4.0 on over 600 Route Kilometres of the Lucknow Division of North Eastern Railway. Kavach is an indigenously developed Automatic Train Protection (ATP) system with train protection and collision prevention capabilities.
Kavach:
| Dimension | Key Details |
|---|---|
| Status | Kavach is adopted as the National ATP system in July 2020. |
| Developing Authority | Kavach is developed by the Research Design and Standards Organisation (RDSO). |
| Working Principle | Kavach operates through continuous real-time communication between trackside systems and locomotives using secure Ultra High Frequency (UHF) radio antenna and track-mounted Radio Frequency Identification (RFID) tags. |
| Location and Data Capture | RFID tags provide precise train location, and wayside units collect live data from station interlocking systems, including signal aspects, point positions, track occupancy, and route status. |
| Key Safety Features | Kavach comprises the following safety features: detection and prevention of Signal Passing at Danger (SPAD) by automatic stopping before the signal; cab signaling with movement authority, target distance, speed, and signal aspects; prevention of train collisions (head-on, rear-end, and side-on); continuous real-time updates to the locomotive; automatic horn activation when approaching Level Crossing Gates; roll back and roll forward protection; Emergency Stop (SoS) messages; centralized live monitoring of train movements through the Network Management System (NMS). |