World's Most Crowded Subways
No. 10 Hong Kong
Annual Ridership: 1.44 billion
No wonder it’s popular: the efficient, affordable MTR system makes it a breeze to navigate densely packed Hong Kong. Before heading to the airport, you can even check your bags in advance at the Hong Kong or Kowloon MTR stations. Hong Kong’s metro also happens to be one of the world’s safest thanks to glass doors introduced in all stations as of 2011—eliminating the risk of falling onto the tracks or being hit by an incoming train.
Source: Metro World Database, 2012