About Chicago Data Maps

Chicago Data Maps is made in Chicago by Common Signal, a studio that builds consumer data products from public data. It is published by Common Signal LLC. The transit map is the first of a family of maps of how the city moves; more are on the way.

The maps are built on our own engine: an OpenStreetMap basemap we host ourselves, live public feeds polled once a minute, and our own measurements computed from them. Nothing here is a tracker; everything here is a picture of the city.

Get in touch

If you like this work, want to talk about data, or want something like it built: zach@commonsignaldata.com.
More about Common Signal: commonsignaldata.com

Data sources and terms: Terms and data sources. What we collect about you: nothing — Privacy.