High-Density Rail Network: Indian Railways plans to four-lane around 11,000 km of its high-density rail network to expand train capacity and ease congestion on key routes. The proposed infrastructure push is aimed at improving the movement of passenger and freight trains while further strengthening capacity across some of the busiest corridors.

On Wednesday, Railway Minister Ashwini Vaishnaw highlighted the importance of the seven high-density routes, which carry a significant share of the country’s total rail traffic. Together, these routes cover nearly 11,000 km but account for around 41 per cent of total railway traffic, despite making up only about 16 per cent of the railway network. He also highlighted the environmental and economic benefits of rail transport.

The seven high-density routes include:

• Delhi-Howrah
• Howrah-Chennai
• Chennai-Mumbai
• Mumbai-Delhi
• Delhi-Chennai
• Mumbai-Howrah
• Delhi-Guwahati

In a statement, the national transporter said that the expansion is important for routes that handle heavy traffic between major cities and regions. It added that more railway lines can allow trains to operate with greater flexibility and help reduce pressure on existing tracks.

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The four-laning of the high-density network is part of Indian Railways’ broader efforts to increase capacity and prepare the network for future passenger and freight demand.

Seven high-density railway routes

Kavach implementation on Indian Railways’ high-density network

In a written reply in the Lok Sabha on July 22, 2026, the Railway Minister said that Kavach 4.0, India’s indigenously developed automatic train protection (ATP) system, has been expanded to cover 2,490 route km across the Delhi-Mumbai and Delhi-Howrah rail corridors.

According to the minister, Kavach 4.0 comes with several upgrades, including improved train location accuracy, better signal information in large railway yards and a station-to-station interface through optical fibre cable (OFC). The system can also be directly integrated with the existing Electronic Interlocking System.

 

Kavach 4.0: Route-wise Commissioning Progress

2,490 Rkm

Total route km commissioned, as on 13.07.2026

Delhi-Mumbai Route: 1,344 Rkm

Section-wise progress (Route Km)

1,248

96

Tilak Bridge-Junction cabin-Palwal-Mathura-Nagda-Vadodara-Virar (except Mangalmhudi-Panchpipliya; also passes through UP): 1,248 Rkm

Vadodara-Ahmedabad section: 96 Rkm

Delhi-Howrah Route: 1,146 Rkm

Section-wise progress (Route Km)

563

260

159

71

50

43

Chipyana-Tundla-Kanpur-Subedarganj (passes through UP): 563 Rkm

Chota Ambana-Bardhaman-Howrah: 260 Rkm

Gaya-Sarmatarn-Nimiaghat: 159 Rkm

Kanpur-Lucknow (passes through UP): 71 Rkm

DDU(FOC)-Bhabua Road (passes through UP): 50 Rkm

Sasaram-Pheser: 43 Rkm

Kavach 4.0 has been commissioned on the high-density Delhi-Mumbai and Delhi-Howrah routes, with several sections passing through Uttar Pradesh.

Source: Rajya Sabha