Delhi Metro is world's 9th longest metro system and 16th largest by ridership with an average daily ridership of 25.3 lakh passengers.

How has it changed the face of Public Transportation in India?
I tried to Answer this in the video.

Sources:
[1] https://economictimes.indiatimes.com/...
[2] http://www.academia.edu/1812158/Delhi...
[3] https://www.hindustantimes.com/editor...
[4] http://www.delhimetrorail.com/about_u...
[5] http://statisticstimes.com/demographi...