As all know that delhi is the capital of india and there is a huge number of people living there. also it is a big city and going from one place to another in cities is a tedious task. But delhi metro service works greatly in this area. It is time saving, money saving and also energy saving service which is also pollution free. I travel many time in delhi metro and my experience is amazing with that. Also metro card help me to save my time and yes, my important time. The metro rail network is in the whole city so you do not get any discomfort there.