What is this?
This map shows all trains (yellow pins) on the London Underground network in approximately real time (screenshot). Click the stations for a local map of that station.
I have a (per-station) National Rail version, and an awesome bookmarkable train times journey planner.
— Matthew
How does it work?
Live departure data is fetched from the TfL API, and then it does a bit of maths and magic. It’s surprisingly okay, given this was done in only a few hours at Science Hackday on 19/20th June 2010, and the many naming/location issues encountered, some unresolved. A small number of stations are misplaced or missing; occasional trains behave oddly; some H&C and Circle stations are missing in the TfL feed.
Who did this?
Matthew Somerville (with helpful hinderances from Frances Berriman and James Aylett). Station icon by Tim Diggins. Source code.