The Mumbai Suburban Railway transports seven million people every day.

BBC: Riding the rails like a Mumbaiker

Mumbai's suburban railway system for example, carries 6.3 million commuters daily.

FORBES: Bombay's Bridge Over Troubled Traffic

Notably, too, a member of the IM said it was behind the bombing of Mumbai's suburban railway system five years ago this week, when over 200 people were killed.

ECONOMIST: The commercial capital is blasted