Grey Line (Delhi Metro)

The Grey Line (Line 9) is a line of the Delhi Metro that connects Dwarka to Dhansa Bus Stand located in Najafgarh in the western part of Delhi, India. The total length of the line is 5.19 kilometers (3.22 mi).^[1] It is the shortest line on the entire network.

Grey Line (Line 9)
Overview
Status	Operational
Owner	Delhi Metro
Locale	Delhi
Termini	Dwarka Dhansa Bus Stand
Stations	4
Service
Type	Rapid Transit
Operator(s)	Delhi Metro Rail Corporation
History
Opened	4 October 2019 (Dwarka – Najafgarh) 18 September 2021 (Najafgarh – Dhansa Bus Stand)
Technical
Line length	5.19 kilometers (3.22 mi)
Character	Underground & Elevated
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge broad gauge (blue line)
Electrification	25 kV 50 Hz AC overhead catenary
Route map Legend Dhansa Bus Stand Grey Line Najafgarh Dwarka - Najafgarh depot Nangli Sahibi River Dwarka Blue Line Rohini Sector 28 Rohini Sector 29 Rohini Sector 30 Prahladpur Rohini Sector 26 Red Line Rohini Sector Deep Vihar Begumpur Rohini Sector 22 Aman Vihar Sultanpuri Nangloi Green Line Qamruddin Nagar Kunwar Singh Nagar Ranhola Tirangpur Kotla Baprola Jai Vihar Dichaon Enclave Shiv Enclave Dhansa Bus Stand Grey Line Gopal Nagar Mitraon Sulhera Jaffarpur Mundhela Kalan Bakkargarh Issapur Air Force Dhansa Dhansa Dhansa Border Delhi Haryana border Dariyapur Badli Badli Majra

The line has a single interchange to the rest of the Delhi Metro network at Dwarka station, connecting to the Blue Line. Grey Line uses 1,435 mm (4 ft 8+1⁄2 in) standard gauge tracks, while the Blue Line was built with wider tracks.

The line uses the same rolling stock used on Pink and Magenta lines, although no Platform Screen Doors (PSDs) have been installed due to low ridership projections.

The Dwarka Station is the only station in the network to have five platforms on the same level (2 are for the Blue Line, 2 for the Grey Line, and the third one connects the Blue Line with the Najafgarh Depot).^[2]

History

The Dwarka to Najafgarh section was opened to the public on 4 October 2019.^[3] A further extension to Dhansa Bus Stand was scheduled to open in December 2020, but construction was delayed by the COVID-19 pandemic. The extension was eventually inaugurated on 18 September 2021.^[4][5]

Stations

Main article: List of Delhi Metro stations

The stations for the Grey Line are:^[6]

Grey Line
#	Station Name		Opening	Interchange Connenction	Station Layout	Platform Level Type
	English	Hindi
1	Dwarka	द्वारका	4 October 2019	Blue Line	Elevated	Side
2	Nangli	नंगली	4 October 2019	None	Elevated	Side
3	Najafgarh	नजफ़गढ़	4 October 2019	None	Underground	Side
4	Dhansa Bus Stand	ढांसा बस स्टैंड	18 September 2021	None	Underground	Side
5	Mitraon	मित्राऊं	Proposed	None	Underground	Island
6	Surhera	सुरहेरा	Proposed	None	Underground	Island
7	Jaffarpur Kalan	जाफरपुर काला	Proposed	None	Underground	Island

Najafgarh station was initially planned in the regular rectangle shape. However, when the construction work began on-ground, some of the private land could not be acquired for the project. Due to this, Delhi metro had no other option but to plan the metro station with the land which was available to them. The dumbbell shaped station has been completed in such a way that the station area has shrunk by a few metres in the middle.^[7]

Train info

Grey Line
Rakes	Hyundai Rotem
Train Length	6
Train Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Electrification	25 kV, 50 Hz AC through overhead catenary OHE
Train's Maximum Speed	100 km/h
Train Operation	Delhi Metro

Extensions

"Phase-V: Dhansa-Jhajjhar Metro": The Grey Line Delhi Metro from Dhansa Bus Stand to Jhajjar City is proposed in the phase V, which is awaiting approval^[8]

See also

• Transport in Delhi
• Transport in Haryana