The Lucknow Metro, which opened to public for commercial operations, ran into trouble on its very first day after a technical snag resulted in around 500 passengers getting stuck near the Mawaiya station for around an hour.
Commuters were left to struggle without lights and air-conditioners inside the train for over 20 minutes before the rescue team arrived.
A team of the Lucknow Metro Rail Corporation (LMRC) was sent to the spot and it took a while before they could detect the fault. The officials said the train had some fault in its traction.
Meanwhile, all other trains are plying on the parallel track, officials said.