Delhi Metro Magenta Line to Become Longest Corridor

The Magenta Line (Line-8) of the Delhi Metro is set to become the longest corridor in the network following the completion of Phase-IV and newly sanctioned Phase-V (A) expansions. Officials said the extended line will significantly improve cross-city connectivity across Delhi-NCR, while also setting new benchmarks in interchange and underground infrastructure.

Expansion Plans and Total Length

With the approval of the Phase-V (A) extension from Ramakrishna Ashram Marg to Indraprastha via Central Vista, the Indraprastha–Inderlok stretch under Phase-IV will now function as a continuation of the Magenta Line. Once these works are completed, the corridor will run from Botanical Garden in Noida to Inderlok in Delhi.

The total length of the Magenta Line will reach approximately 89 kilometres, making it the longest corridor in the Delhi Metro network. Upon full operationalisation, the entire stretch is planned to function as a driverless Metro corridor, reflecting the system’s shift towards advanced automation.

Record Number of Interchange Stations

After the expansion, the Magenta Line will feature 21 interchange stations, the highest in the network. Currently, the operational segment has four interchange stations — Kalkaji Mandir, Botanical Garden, Janakpuri West and Hauz Khas.

An additional 17 interchange stations will be added under Phase-IV and Phase-V (A), including Kalindi Kunj, Terminal-1 IGI Airport, Azadpur, Central Secretariat, New Delhi and Inderlok. Notably, Central Secretariat, Azadpur, New Delhi and Inderlok will become triple interchange hubs, each connecting three different Metro lines.

Engineering Milestones and Underground Reach

The completed corridor from Botanical Garden to Inderlok will have 65 stations, of which 40 will be underground. This will make it one of the most tunnel-intensive stretches in the network.

The line also hosts two major engineering landmarks. Haiderpur Badli Mor is the highest elevated Metro station in the system, with a rail level height of about 28.36 metres. Hauz Khas remains the deepest underground station, at nearly 29 metres below ground level. These features underline the complex engineering behind the corridor’s construction.

Important Facts for Exams

• Delhi Metro Phase-IV and Phase-V expansions aim to enhance multi-modal urban connectivity.
• Driverless Metro operations use Communication-Based Train Control (CBTC) technology.
• Interchange stations reduce travel time by enabling seamless transfers between lines.
• Hauz Khas is among the deepest Metro stations in India.

Impact on Urban Mobility

The expanded Magenta Line is expected to reduce congestion on key corridors and provide seamless end-to-end connectivity across Delhi and neighbouring NCR regions. By integrating multiple high-traffic nodes and increasing interchange options, the corridor is projected to ease commuter pressure, shorten travel times and strengthen the capital’s mass rapid transit backbone.