Good news for passengers: Indian Railways commissions Kavach 4.0 on Delhi–PWL route to improve train safety

Passengers travelling on the Indian Railways network may soon see safer train operations as Kavach 4.0, the Railways’ indigenous automatic train protection system, has been successfully commissioned on the Delhi–PWL section of Northern Railway.

The latest rollout covers the New Delhi (Ex)–Junction Cabin section on the busy Delhi–Palwal route and marks a major milestone for railway safety infrastructure on one of India’s key rail corridors.

With this development, the Northern Railway portion of the New Delhi–Mumbai section, excluding New Delhi station itself, has now been fully covered under Kavach between TKJ and PWL.

What is Kavach 4.0?

Kavach is Indian Railways’ indigenously developed automatic train protection system designed to prevent train collisions and improve operational safety.

The system helps loco pilots by:

• Providing real-time signal information
• Monitoring train speed
• Automatically applying brakes if required
• Preventing signal passing at danger (SPAD) situations

Railway officials say Kavach plays a major role in improving train safety and reducing the risk of accidents caused by human error.

Delhi–PWL route now fully covered under Kavach

According to Northern Railway, the latest Kavach implementation includes:

• 21.6 route kilometre section coverage
• 86 track kilometres under Kavach network
• Installation at four major stations
• More than 1,200 RFID tags
• Four communication towers
• 42-km optical fibre backbone network

The system has been installed across major railway yards including TKD, OKA, NZM and TKJ.

Railway officials said the project involved large-scale relay wiring, testing and signal validation to ensure safe operations.

How Indian Railways upgraded the Delhi–PWL section

As part of the Kavach 4.0 rollout, Indian Railways carried out extensive testing and infrastructure work on the corridor. The project included:

• 1,326 Kavach relay wiring and testing works
• Factory acceptance testing of 653 Kavach routes
• Site acceptance testing of 2,510 Kavach signal combinations

Officials said the system has been integrated with advanced communication and monitoring infrastructure to improve train operations and safety monitoring.

Communication towers, fibre network installed on route

Railways has also installed:

• Four dedicated communication towers
• 42-km backbone optical fibre cable network
• Network Management System (NMS) at New Delhi Control

The upgraded communication infrastructure is expected to help in smoother monitoring and faster system response during train operations.

How Kavach 4.0 will help passengers

According to railway officials, the Kavach expansion is expected to:

• Improve train safety
• Reduce collision risk
• Strengthen signalling systems
• Improve operational efficiency
• Support safer high-density rail operations

The Delhi–Palwal route is among the busiest railway sections in the NCR region and forms part of the important New Delhi–Mumbai corridor.

Officials said the rollout is another step towards modernising railway safety infrastructure across India.

Indian Railways expanding Kavach network across routes

Indian Railways has been gradually expanding the Kavach safety system across multiple high-density and high-priority routes to improve operational safety.

Railway officials said Kavach 4.0 represents the latest version of the indigenous train protection technology and is expected to play a major role in future railway modernisation plans.

What it means for passengers

For passengers, the rollout could mean:

• Safer train journeys
• Better signalling reliability
• Reduced chances of train collision
• Stronger railway safety systems