Kavach System
Why in news?
Over 2,000 route kilometers of the Kavach system have been commissioned as of December 2025, with installations on 4,154 locomotives.
What is Kavach?
- Kavach is India's indigenously developed Automatic Train Protection (ATP) system, designed by the Research Designs & Standards Organisation (RDSO) in collaboration with Indian firms.
- It automatically applies brakes if a loco pilot fails to act, ensures trains run within speed limits
- It enhances railway safety by preventing collisions and signal violations.
- Initially called the Train Collision Avoidance System (TCAS), it was adopted as the National ATP in 2020.
- Certification: Achieved Safety Integrity Level 4 (SIL-4), the highest safety certification for such systems.
- Collision Avoidance: Prevents head-on, rear-end, and side collisions by automatically controlling train movement.
- Speed Monitoring: Ensures trains stay within prescribed speed limits.
- Automatic Braking: Applies brakes if the driver fails to respond.
- Weather Safety: Helps trains run safely even in poor visibility or adverse weather.
- Components:
- Optical Fibre Cable (OFC) laid along tracks (7,129 km completed).
- Telecom towers (860 installed).
- Data centres connecting 767 stations.
- Trackside equipment across 3,413 km.
- 4,154 locomotives equipped.
- Coverage: Over 2,000 km of rail network already under Kavach.
- Accident Reduction: Rail accidents have declined by ~90% since 2014, attributed to safety upgrades like Kavach.
- Cost Advantage: Promoted as one of the cheapest ATP systems worldwide, making it scalable for India’s vast rail network.
- Complex Deployment: Requires extensive infrastructure (OFC, towers, data centres).
- Training Needs: Loco pilots and staff must undergo detailed training.
- Scaling Up: India’s rail network is over 68,000 km, so full rollout will take time.
- Maintenance: High-tech systems demand continuous monitoring and upkeep.
