NEW DELHI (Metro Rail News): Indian Railways is moving towards implementing four lanes around its existing 11,000 km network, which incorporates 7 high-density vital corridors to create greater capacity for passenger and freight train movements.
The 7 High Density Railway Lines are:
- Delhi-Howrah
- Howrah-Chennai
- Chennai-Mumbai
- Mumbai-Delhi
- Delhi-Chennai
- Mumbai-Howrah
- Delhi-Guwahati
The strategic plan is very important for routes that handle heavy traffic between major cities and regions. These routes account for almost 41% of total train traffic and covers 16% of the rail network.
Moreover, the seven corridors are also critical for freight movement between India’s major economic centres. More tracks can allow freight trains to operate without competing as heavily with passenger services for limited track capacity. There is an economic advantage in moving more goods by rail.
Railway Minister Shri Ashwini Vaishnaw has said ‘‘Rail freight costs about ₹1.6 per tonne-km compared with ₹3.6 per tonne-km by road’’, according to ETInfra’s report.
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The expansion is not limited to laning ,Indian Railways is also strengthening signalling and train protection systems across the high-density network. As of July 13, 2026, Kavach 4.0 had been commissioned across 2,490 route km on the Delhi–Mumbai and Delhi–Howrah corridors.
The combination of additional tracks, modern signalling and automatic train protection through Kavach is aimed at improving both network capacity and operational safety. This is particularly important as Railways plans to accommodate more passenger and freight trains on these already heavily utilised corridors.
Also read: Indian Railways’ Kavach Commissioning Remains Pending Despite 2020 Approval