New map of London
Showing travel times to work at the Department for Transport in Pimlico, arriving at 9am
And now they have fancy animated versions with sliders that you can set to show exactly the range of time you want, or commuting times cross-indexed with real estate prices…
How do they do it? In an incredibly primitive fashion. They go to the transit company web site and request route information from one location, then parse the html and put it in their database, make another request and so forth. Suddenly I understand what the folks over at Freedom to Tinker are talking about when they push for government data transparency.