The animation depicts every public transit trip scheduled to take place on Tuesday, August 15, 2017 heading in or out of San Francisco and the greater bay area.

Data from Transitland, an open-source data service sponsored by Mapzen that aggregates transit networks around the world.

See this blog post for more info: mapzen.com/blog/animating-transitland/

Visualization by Will Geary. See the code here: github.com/transitland/transitland-processing-animation

See this blog post for more info: mapzen.com/blog/animating-transitland/