The Chicago Traffic Information website is presented by the Traffic Management Authority at the City of Chicago Office of Emergency Management & Communications
(OEMC-TMA). This initial version of the website displays Average Daily Traffic (ADT) volumes, Traffic Signal locations and Red-Light Camera
Program intersections throughout the city. As the site develops, it will become a source for all traffic related information in the
City of Chicago. It will include data on real-time traffic congestion, downtown pedestrian traffic volumes, airport travel advisories, roadway
incidents, construction, and other traffic related information.
Average Daily Traffic (ADT)
Average Daily Traffic refers to the number of vehicles traveling through a particular point on the city streets in a 24-hour period.
Counts were taken at various locations throughout the city in 2006. The map on this website displays all of these count locations.
The map must be zoomed in to a "Zoom Level" of 16 or above to display all of the counts.
Each number on the map shows the total number of vehicles that passed through a count location in a 24-hour time period on the day the count was taken.
The actual number of vehicles passing through these locations will be different each day depending on the day of the week, time of the year, weather, and
other conditions.
The number includes a count of vehicles traveling in both directions of traffic for bidirectional streets
and one direction for one-way streets. For additional information on an ADT count, click on the ADT number on the map.
A popup window will show the address where the count was taken, date of the count, number of vehicles traveling in each direction, and the total number of
vehicles traveling in both directions.
The Traffic Count ID # on top of the popup window is provided for reference purposes only.
Traffic Signals
Chicago has about 2900 traffic signals throughout the city. About 470 of these signals are interconnected through a fiber-network that facilitates the centralized
monitoring and control of signal operations. Whether interconnected or not-interconnected, the signals are programmed to synchronize with
signals immediately around it so that vehicles will pass through the intersections most efficiently. New signals are added and old signals are modernized
every year depending on the need and availability of funds. While OEMC/Traffic Management Authority is responsible for maintaining the signal coordination
and timing, Bureau of Electricity at Streets and Sanitation is responsible for the maintenance
of the signals, and Chicago Department of Transportation
(CDOT) is responsible for the physical design and construction of signals. Public can address questions and concerns on traffic signal operations by
calling the 311 or by submitting an online service request.
Red Light Cameras
Red-light running enforcement cameras are maintained by the Office of Emergency Management & Communications. The number one priority of the red light
camera program is the safety of our residents. In 2003, Chicago launched its red light camera pilot program to
address an increase in fatal motor crashes at traffic signals. Using traffic crash data collected by Chicago Police, ten intersections were selected and cameras were installed. Since those
intersections were equipped with cameras, there has been a 24 percent average reduction in red light accidents. Currently, Chicago has 187 intersections
with cameras, and these intersections are seeing a 59 percent average reduction in red light running. The fine for running a red light is $100. For more
information on a red-light ticket or to view your violations visit the Department of Revenue's website .
Downtown Pedestrian Counts
The Chicago downtown pedestrian traffic counts were conducted in the summer of 2007. The counts were confined to the Central
Business District and nearby shopping and entertainment areas on the north, south, and west sides. While most of the counts
were taken from 7:45 a.m. to 5:45 p.m., several of the counts north of the Chicago River were taken from 12:30 p.m. to 9:30 p.m.
All of the counts on the map are from weekdays and are mid-block counts. Click on the pedestrian count on the map for the exact
count, the count's exact duration, and location (including the side of the street). For most locations, a count was taken on
both sides of the street. The number on the map shows the count from only one side of the street and is displayed in thousands.
The pedestrian counts are provided by Chicago Department of Transportation (CDOT).
For additional information on the Chicago Traffic Information website project contact OEMC/Traffic Management Authority office at: 120 N Racine, Suite 200, Chicago, IL 60607. PH: 312-743-7377
Site feedback can be addressed to Abraham Emmanuel at OEMC/TMA: aemmanuel@cityofchicago.org
