The delhi metro has really been a boon to the city.it has helped people especially me in saving time and money on everyday basis.i don’t have to stuck at red lights for travelling in delhi rather I prefer metro, .even right now I am writing this review while sitting in a metro.its a very nice way for local commutation.i am happy with smart card feature also which saves my time.the staff is also very supportive and the security at the stations is also very adequate.