From Vox:

Vox

Bike-share systems, which make fleets of bicycles available for common use in a city (usually for a small fee), are catching on. As this detailed bike-share map shows, there are now close to 900 in operation in cities across the world. …

What’s been lacking? Cool animated visualizations of bike-share traffic in major cities, that’s what.

But have no fear! Visual designers Till Nagel and Christopher Pietsch, of Potsdam, Germany, have answered the call.