The Violet Line is a metro rail line of the Delhi Metro, a rapid transit system in Delhi, India. The line connects Kashmere Gate station in New Delhi with Raja Nahar Singh in Ballabhgarh via Faridabad. The line consists of 34 metro stations with a total length of 46.34 kilometres (28.79 mi).

The Yellow Line is a metro rail line of the Delhi Metro, a rapid transit system in Delhi, India. It consists of 37 stations from Samaypur Badli in Delhi to Millennium City Centre in the neighbouring city of Gurgaon in Haryana. The 49.02 kilometers (30.46 mi) line is mostly underground and laid under one of the most congested parts of Delhi. The Yellow Line is the second line of Delhi Metro to become operational after the Red Line.