The Traffic Division monitors and maintains the City of O’Fallon’s traffic signals and traffic control signs. The Traffic Division also works as project managers for the installation of new signals, signal improvement, and signal modification projects.

Contact Traffic staff

Anthony Friedman, Senior Project Manager This email address is being protected from spambots. You need JavaScript enabled to view it. 636-379-5492

Each year, the Traffic Division conducts a preventative maintenance program for the City’s traffic signals, which keeps them safe and working properly.

Because some signals within the City of O’Fallon, such as those on Route K, are not owned or controlled by the City, the Traffic Division notifies the Missouri Department of Transportation (MoDOT) of any requests or concerns regarding the signals. Although it is MoDOT’s responsibility to address the issues, the Traffic Division follows up with MoDOT to see that the issues are addressed properly.

To report any signal malfunctions, damaged or downed signs, request a new sign or report any other incidents, please visit the Citizens First Center or call 636-379-5553. Due to high volume, please allow adequate time for the work to be completed. Requests for new sign installations will be investigated and evaluated based on City Ordinances and National Standards for installation of traffic control devices. 

During after-hours emergencies, please contact the O’Fallon Police Department dispatcher at 636-240-3200.

Traffic Calming Program

The City of O’Fallon has implemented a Traffic Management Policy as of May 2008. The policy allows for various physical traffic calming measures to be installed in order to maintain the safety and operational performance of roadways. Traffic Calming installations have proved effective at reducing the average speed on a roadway to below the posted speed limit, to those roadways which qualify based on the Traffic Calming process.

Each month, the City hosts an open forum regarding the Traffic Calming Policy and Process. Residents who have questions or are interested in the process are welcome to attend. The meetings are held at O’Fallon City Hall (100 N. Main St.) from 6PM to 8 PM, and they will occur on the first Tuesday of every month. If the schedules change, a notification will be posted here.

Below, you will find several resources regarding the Traffic Calming Program. Please contact Anthony Friedman at 636-379-5492 or This email address is being protected from spambots. You need JavaScript enabled to view it. if you have any further questions.

Citizen’s Speed Monitoring Program

In cities throughout the nation, speeding in residential neighborhoods is one of the leading causes of citizen complaints. Studies show that resolving the situation using traditional means of enforcement results in only a short-term reduction of speed; violators quickly return to speeding when enforcement ends.

Now, the O’Fallon Police Department is teaming up with the Traffic Division to administer a new anti-speeding program that uses the help of citizen volunteers. Pairs of volunteers will use hand-held radar units to monitor neighborhood streets for speeding. Violations of 15 MPH or greater will be logged, and the information will be turned over to the Traffic Division. The Police Department will contact violators and ask for voluntary compliance with the law. No arrests will be made or tickets issued. The goal of the program is education and compliance.

Other resources