By T N Ashok
NEW YORK: A great metro system is much more than a railway: it changes how a city grows, where people live and work, how businesses attract customers, and how public spaces evolve.
The Delhi Metro illustrates this transformation particularly well. Unlike the older networks of London, Paris and New York, it has expanded within little more than two decades into a vast regional transport system, while introducing automated trains and helping reshape the commercial geography of the National Capital Region.
One important distinction needs to be made at the outset: Delhi Metro is among the world’s largest and fastest-expanding urban rail networks, but the claim that it is the world’s second-largest metro requires qualification. Rankings change depending on whether one measures route length, track length, stations, daily passengers or the combined networks of neighbouring cities. Shanghai and Beijing, for example, operate exceptionally extensive systems of their own.
How India’s capital built one of the world’s largest metro networks—and turned stations into commercial destinations. Crowded, noisy and often exhausting, metropolitan railways are indispensable to the functioning of modern cities. From London’s Victorian tunnels to the automated trains of Copenhagen and the enormous networks of Beijing and Shanghai, metros have evolved into economic arteries, shaping urban expansion, property values and the daily lives of millions.
The Delhi Metro is among the most striking examples of this transformation. Opened in December 2002, it has grown from a short railway serving six stations into India’s largest and busiest metro system, connecting the national capital with neighbouring cities and generating new commercial activity along its corridors.
London’s Underground, inaugurated in 1863, pioneered urban underground railways. Its 11 lines and approximately 400-kilometre network carry millions of passengers daily. Paris developed a dense system celebrated for its historic entrances and distinctive station architecture, while New York’s 24-hour subway remains central to the economic and cultural life of the United States’ largest city.
Asia has transformed the scale of metro construction. Beijing operates an extensive network serving millions of journeys daily, while Shanghai has expanded at extraordinary speed to become one of the world’s largest systems by route length and passenger numbers. Tokyo’s interconnected urban railways demonstrate how frequent services can support a vast metropolitan economy.
Seoul combines extensive connectivity with sophisticated passenger facilities, while Singapore’s Mass Rapid Transit system integrates transport with carefully planned urban development.
Other systems offer different lessons. Copenhagen operates fully automated trains around the clock. Moscow’s grand underground stations combine transport with architectural spectacle, while Hong Kong’s Mass Transit Railway has demonstrated how railway investment and property development can reinforce each other.
These networks cannot be ranked meaningfully by one measure alone. Route length, number of stations, daily ridership and geographical coverage produce different results.
Delhi’s modern metro was conceived against a backdrop of mounting congestion, rising motorisation and deteriorating urban air quality. The capital’s population and surrounding settlements were expanding rapidly, while road infrastructure struggled to accommodate commuters travelling increasingly long distances.
The Delhi Metro Rail Corporation (DMRC) was incorporated on May 3, 1995. The first trains began operating on December 25, 2002, along an 8.4-kilometre stretch between Shahdara and Tis Hazari, serving six stations. The initial project was developed through cooperation between the Union government and the Delhi government, with construction supported substantially by Japanese development finance.
The first phase was completed ahead of schedule, establishing a reputation for disciplined project execution. Subsequent phases extended the network across residential districts, business centres, transport terminals and neighbouring urban settlements.
By 2026, the wider Delhi-NCR metro system had reached approximately 416 kilometres, with 303 stations when associated systems in Noida-Greater Noida and Gurugram are included. The core DMRC-operated network is smaller, so the distinction between the operator’s own lines and the wider regional network matters when comparing international figures.
The scale of usage is equally impressive. DMRC recorded approximately 2.358 billion passenger journeys during 2025, averaging around 6.46 million journeys daily. On August 8, 2025, it registered a record exceeding 8.18 million journeys in a single day. These are passenger journeys, not necessarily unique individuals.
A September 2026 report in The New York Times noted that Delhi’s network had surpassed New York’s in length. This is a significant milestone, although it does not establish Delhi as the world’s second-largest metro by every international measure.
DMRC is a government-owned joint venture, with equal equity participation from the Government of India and the Government of the National Capital Territory of Delhi. Its structure combines central and state-level responsibilities rather than placing the railway under a single private owner.
The two governments jointly oversee the corporation through their nominated representatives. Japanese development assistance has helped finance major construction phases, alongside contributions from the participating governments and other financing arrangements.
The model has allowed Delhi Metro to pursue large, long-term infrastructure projects beyond the immediate commercial returns available from passenger fares. However, its expansion also depends on public investment, financing costs, land acquisition and the ability to generate additional revenue.
Delhi Metro has progressively crossed administrative boundaries to serve a wider urban economy. Its connections reach Gurugram, Faridabad and Bahadurgarh in Haryana, as well as Noida, Greater Noida and Ghaziabad in Uttar Pradesh.
These extensions allow workers to live farther from central Delhi while retaining access to employment centres, educational institutions and commercial districts. They also strengthen connections between residential suburbs, offices, shopping centres and major interchange stations.
Further expansion is under way. Phase IV includes new corridors designed to improve connections across underserved districts, while additional projects will strengthen links with central Delhi and the airport. The Rithala–Narela–Kundli corridor is intended to extend connectivity towards the Haryana border.
It is important, however, to distinguish Delhi Metro from the separate Namo Bharat regional rapid-transit system, which is designed for faster intercity commuting across the National Capital Region. The two systems are complementary, not interchangeable.
Automation is not merely a future ambition for Delhi Metro. Driverless operations have already been introduced, beginning with the Magenta Line in December 2020. The system subsequently expanded automated operations to other corridors.
By August 2026, DMRC reported that approximately 29 per cent of its network was operating under Unattended Train Operation technology. The Pink Line, approximately 71.55 kilometres long, is among the most prominent examples of extensive driverless operation.
Automation can improve service frequency, regulate train movements and reduce dependence on manual driving. It does not eliminate the need for staff, maintenance teams, security personnel or operational supervision. Nor does it automatically resolve overcrowding, station congestion or the challenge of ensuring reliable connections with other transport modes.
Delhi Metro’s influence extends well beyond the railway tracks. Improved accessibility has made locations near stations more attractive for residential developments, office buildings, hotels, retail complexes and mixed-use projects.
Areas such as Dwarka, Noida, Gurugram and parts of South Delhi have benefited from better connections to employment and commercial centres. Developers can market properties on the basis of shorter commuting times and access to a wider labour market.
The relationship works in both directions: new residential and commercial developments generate additional passengers, while increased accessibility can raise demand for nearby property. Nevertheless, metro connectivity alone does not guarantee rising prices or profitable projects. Local infrastructure, planning permissions, parking, employment opportunities and broader market conditions remain important.
One of the most visible changes is the emergence of commercial activity inside and around major metro stations. Rajiv Chowk, beneath the busy Connaught Place district, illustrates how a transport interchange can double as a retail destination. Food outlets, quick-service restaurants, kiosks and convenience businesses serve passengers moving between trains or travelling to nearby offices and shopping areas.
Delhi Metro’s achievement lies not simply in the kilometres of railway constructed, but in its integration into the everyday life of a sprawling metropolis. It has created new commuting possibilities, supported commercial development and introduced automation on a substantial scale.
Yet the challenges remain considerable: crowded trains, last-mile connectivity, accessible pedestrian routes, integration with buses, affordable fares and the financial demands of continued expansion. Metro travel can reduce dependence on private vehicles, but its environmental benefits depend partly on how easily passengers can reach stations and complete their journeys.
Delhi’s experience reinforces a lesson shared by the world’s leading metro systems: successful urban railways are not isolated engineering projects. They work best when transport, housing, commercial development and public space are planned together.
From six stations in 2002 to a regional network carrying millions of passenger journeys every day, Delhi Metro has become one of India’s most consequential public infrastructure investments—and a powerful example of how mass transit can reshape a city. (IPA Service)
