In 2009, Chicago Department of Transportation (CDOT) placed automatic bike counting equipment at many locations around the city. It uses pneumatic tubes to count the number of bicyclists (excludes cars) at that point in the street – it counts ALL trips, and cannot distinguish between people going to work or going to school.
The size of the blue dot indicates the bicycle mode share for that count location. Mode share calculated by adding bikes and cars and dividing by bikes.
Get the data
- View the map, at GeoCommons
- View the raw data, at Google Fusion Tables (filter data; export as CSV or KML files)
- Download the raw data as CSV (load into Microsoft Excel, OpenOffice, Apple Numbers)
- Read the report from CDOT (PDF)




