The Union Cabinet approved four railway multitracking projects spanning eight districts across West Bengal, Odisha, Tamil Nadu, and Andhra Pradesh. Multitracking expands existing single or double rail lines to add parallel tracks, increasing network capacity without new land corridors. These projects aim to reduce congestion on high-density routes, improve freight throughput, and enhance passenger train frequency. The approval signals continued investment in rail capacity augmentation under the broader infrastructure push aligned with Viksit Bharat 2047 goals.

Railway multitracking refers to the addition of one or more parallel rail tracks alongside an existing line — converting a single line to double, or a double line to triple or quadruple. This is distinct from a new greenfield rail line: multitracking uses largely the same land corridor and existing infrastructure, making it faster and cheaper to implement while dramatically increasing line capacity.

Capacity on a railway line is measured in terms of the number of trains that can run per day (line capacity). A double line can roughly handle 2–3 times the trains of a single line, and further tracks multiply this effect. High-density routes in India — particularly in eastern and southern corridors — are chronically saturated, causing delays for both freight and passenger services.

The ministry responsible is the Ministry of Railways. Cabinet approval for infrastructure projects of this scale is routed through the Cabinet Committee on Economic Affairs (CCEA) or the full Cabinet, depending on financial thresholds.

The four states involved — West Bengal, Odisha, Tamil Nadu, and Andhra Pradesh — are strategically significant: they connect major freight corridors (coal, steel, port traffic) and link industrial hinterlands to coastal ports. This aligns with the PM Gati Shakti National Master Plan, which seeks multimodal connectivity and last-mile integration.

For UPSC, the examiner will test: (1) what multitracking achieves versus a new line, (2) the ministry responsible, (3) the policy framework (PM Gati Shakti, National Rail Plan 2030), and (4) which states/corridors are covered.