2 weeks ago

AI System 'Gajraj' Alerts Train Drivers to Elephants on Tracks

AI System 'Gajraj' Alerts Train Drivers to Elephants on Tracks
When Elephants Cross Railway Tracks, ‘Gajraj AI’ Alerts Drivers to Slow Trains in Time · thebetterindia.com

Elephants in India walk along paths they have used for a very long time, but trains now cross some of those paths.

When a train comes fast, the driver may not see the elephants until it is too late to stop.

A fully loaded train needs about 1.6 kilometres to stop even with emergency brakes.

So Indian Railways built a smart system called Gajraj Suraksha.

It uses special cables under the tracks that can feel tiny vibrations, like an elephant's footsteps.

The system learns to tell elephant footsteps apart from other movements.

When it senses elephants nearby, it sends an alert to the train driver and station workers.

The train can then slow down before reaching the elephants.

Between 2019-20 and 2023-24, 81 elephants died in train collisions.

The system is now being added along nearly 700 kilometres of forest routes.

In one area in Tamil Nadu, similar cameras helped elephants cross safely more than 9,000 times without a single death.

Key facts

System
Gajraj Suraksha - AI-enabled Intrusion Detection System using Distributed Acoustic Sensors
Detection accuracy
99.5 percent, within five metres of the fibre optic cable
Wild elephant population in India
Estimated 22,446 (nearly 60% of the world's wild Asian elephants)
Elephant corridors
150 identified across India
Elephant deaths in train collisions
81 between 2019-20 and 2023-24 (Lok Sabha data, July 2025)
Rollout coverage
Nearly 700 kilometres of forest routes
Estimated implementation cost
Rs 181 crore
Madukkarai Forest Range results
About 9,481 safe elephant crossings, zero elephant deaths over 2.5 years

Quotes

All India Loco Running Staff Association

Representative of the All India Loco Running Staff Association

“"The network has generated more than 7,116 real‑time alerts, leading to 3,281 instances where loco pilots slowed or stopped trains to allow elephants to cross safely."”
thebetterindia.com
“"Gajraj Suraksha technology relies on Distributed Acoustic Sensors (DAS), which detect vibrations travelling through fibre optic cables."”
thebetterindia.com

Sources

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