Lucknow Metro Rail Corporation awarded Alstom a Rs 10.7bn ($US 160m) contract in September 2015 to supply 20 four-car Metropolis trains as well as its Urbalis CBTC technology, which will enable operation at 100-second headways.

The 22.9km north-south line from Munshi Pulia to Chaudhary Charan Singh International Airport will have 22 stations, 19 of which will be elevated with three underground stations on the central section.

The initial 8.4km section between Transport Nagar and Charbagh is due to open in 2017 and daily ridership is forecast to reach 645,000 by 2020.