I went to the London transport museum on sunday. They had a very interesting video of the evolution of the London tube and train system.
It’s amazing that the basic foundation of what is the current London tube and train system was put into place before 1920. Despite what we know about transportation and health there hasn’t been many major changes to promote green and active forms of transportation in London since 1920. No wonder Boris Johnson (London’s mayor) is trying to start a transportation revolution in London.
To read more about transportation and health here is a really nice paper from the Lancet written by James Woodcock and colleges.