The Red Line (Line 1) (Hindi: रेड लाइन) of the Lucknow Metro is a metro route of mass rapid transit system in Lucknow. It consists of 21 metro stations from CCS International Airport to Munshi Pulia with a total distance of 22.87 km. It is also known as the North-South corridor of Lucknow. The Lucknow metro train consists of four coaches, and they have a maximum speed of 90 km/h. Most of the lines are elevated.