Departure times and journey durations are real; routing is calculated from OSM data; average speed from journey duration and route length.
In the visualisation, the fixed circles represent stands – when a stand flashes red, it means that one or more bikes have left it - and a yellow flash means a bike has arrived. The bikes themselves are represented by the Boris Barclays Blue Tadpoles whizzing around – leaving at the right time, travelling at their correct average speed, and taking a (generally) realistic route.
The movie was created by Martin Austwick of Sociable Physics, here in CASA with the help of Ollie O'Brien (again CASA) for collection and routing.
We are a bit biased on such work, here at digital urban, but its great....