Delhi Metro has been the biggest attraction for Delhi due to their state of the art facilities from ticket vending machines to upcoming driverless trains. In the scorching heat of Delhi combined with bumper to bumper traffic on the roads, Delhi Metro is the only respite for travellers. I have been a regular commuter of Delhi Metro for the past 7-8 years or so and have always liked their services. However, constantly increasing number of commuters and overcrowded stations are a nightmare for all users!