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Average Daily Traffic Counts - 2006 Study - Historical

Published by data.cityofchicago.org | City of Chicago | Catalog Last Checked: June 09, 2026 at 08:32 PM | Dataset Last Updated: June 04, 2026
This dataset is historical for 2006. For recent data, we recommend using https://chicagotraffictracker.com or https://data.cityofchicago.org/Transportation/Average-Daily-Traffic-Counts/gc7y-n4xa. Average Daily Traffic (ADT) counts are analogous to a census count of vehicles on city streets. These counts provide a close approximation to the actual number of vehicles passing through a given location on an average weekday. Since it is not possible to count every vehicle on every city street, sample counts are taken along larger streets to get an estimate of traffic on half-mile or one-mile street segments. ADT counts are used by city planners, transportation engineers, real-estate developers, marketers and many others for myriad planning and operational purposes. Data Owner: Transportation. Time Period: 2006. Frequency: A citywide count is taken approximately every 10 years. A limited number of traffic counts will be taken and added to the list periodically. Related Applications: Traffic Information Interactive Map (http://webapps.cityofchicago.org/traffic/).

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