Kavach System

Kavach System Latest News

Indian Railways has approved the provision of Kavach Version 4.0 on over six hundred Route Kilometres of the Lucknow Division of North Eastern Railway.

About Kavach System

• It is an indigenously developed Automatic Train Protection (ATP) system that provides Train Protection as well as Collision Prevention capabilities for trains.
• It was adopted as the National ATP system in July 2020.
• It has been developed by the Research Design and Standards Organisation (RDSO).
• Working Principle
  • It 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.
  • These tags provide precise train location, while wayside (stationary) units collect live data from station interlocking systems, including signal aspects, point positions, track occupancy, and route status.

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Key Safety Features of Kavach

• Detection and prevention of Signal Passing at Danger (SPAD): It automatically stops the train before the signal.
• Cab signaling with display of movement authority, target distance, speed, and signal aspects.
• Prevention of all types 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 / Roll Forward protection – prevents unintended backward or forward movement of the train, especially on gradients or during halts.
• Emergency Stop (SoS) messages in critical situations.
• Centralized live monitoring of train movements through the Network Management System (NMS).

Source: News On Air