Pink Line (Delhi Metro)

The Pink Line (Line 7) is a metro rail line of the Delhi Metro, a rapid transit system in Delhi, India. It consists of 46 stations between Maujpur - Babarpur via Majlis Park and Shiv Vihar, and at 73.49 kilometres (45.66 mi), is the Delhi Metro's — and India's — longest metro line. The Pink Line corridor becomes India's first operational ring metro network. It covers Delhi in a Ring-shaped pattern and is also known as the Ring Road Line, as it mostly passes alongside the city's Inner Ring Road.

The Pink Line has interchanges with most of the operational lines of the network, such as the Red Line at Netaji Subhash Place & Welcome, Yellow Line at Azadpur & Dilli Haat - INA, Green Line at Punjabi Bagh West, Blue Line at Rajouri Garden, Mayur Vihar Phase-I, Anand Vihar & Karkarduma, Dhaula Kuan of Airport Express (Orange Line) at Durgabai Deshmukh South Campus, Violet Line at Lajpat Nagar, as well as with Hazrat Nizamuddin and Anand Vihar Terminal (Indian Railways / Namo Bharat) and the ISBTs at Anand Vihar and Sarai Kale Khan.

The Pink Line has the highest point of the Delhi Metro at Dhaula Kuan with a height of 23.6 metres (77 ft), passing over the Dhaula Kuan grade separator flyovers and the Airport Express Line. It also possesses the country's smallest metro station, Ashram, with a size of just 151.6 metres (497 ft) against the usual 265 metres (869 ft). The usual platform length for a six-coach train on this route is 140 metres (459 ft) but it has been reduced to 135 metres (443 ft) in the Ashram station.

The further route towards Shiv Vihar acts as a feeder line with separate services, for which passengers have to change platforms.