Ollie O’Brien, one of the contributors to this blog, has produced a map, which updates in near-real-time, of the full/empty states of the 350-odd docking stands in the Barclays Cycle Hire scheme in central London. As each stand fill with bikes, the colour goes from blue to red. The area of each circle is proportional to the total size of the stand. There is also a version that animates through the last 48 hours.
In the picture above, the “super-stand” at Waterloo Station, which is actually composed of three stands beside each other, is highlighted.
The background map is CC-By-SA OpenStreetMap and contributors. The cycle data is from the Transport for London website.