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Speed Management
Dublin Connector

Speed Management

Common Speed Metric: 85th Percentile Speed

To help ensure safe, comfortable streets, the City and Dublin Police look at the 85th percentile speed, a common speed study metric. Out of 100 drivers, it is the maximum speed of 85 drivers. This metric is compared with the posted speed limit. The higher the difference between the speed limit and the 85th percentile speed, the higher the speed category. Higher categories qualify for more aggressive solutions in the Speed Management Toolbox.

Nobody Wins When You Speed

Slow Down Dublin is a community partnership that strives to create safe and comfortable streets for all residents and all road users across Dublin, including people walking and rolling. It offers a data-driven approach to speed management. Your City staff wants to partner with the community through Slow Down Dublin to take an active, engaged role in supporting safe streets in our neighborhoods.

While Dublin Police will continue to monitor and enforce speed violations, community partnership and engagement in this effort is essential. Tools and resources are available to community members to promote speed safety, show their support for safe streets and encourage others to be careful on the roadways and shared use paths.

Speed Management Toolbox

Use our toolbox of resources to support the Slow Down Dublin initiative:

  • Car Magnet – Show your support of the program while you are on the road.
  • Vinyl Sticker – Wear Slow Down Dublin on your car, water bottle, computer or anywhere you’d like.
  • Yard Sign – Share a visual reminder to drive safely in Dublin. Please check any HOA rules about posting.
  • Speed Laser – Become trained to use a handheld speed-measuring device and borrow one to measure traffic speeds on a roadway.
  • Police Ride-Along – Request to ride along with Dublin Police to see for yourself how speed is enforced and how data is collected.
  • Speed Concern – Request a speed study or report an issue on your street

Watch

8 Videos

Speed Warning Cameras

As part of Slow Down Dublin, the Dublin Police Department is using speed warning cameras throughout the city to support safe streets and reinforce responsible driving.

In fall 2024,  cameras began issuing warning letters that will be mailed to vehicle owners based on a driver exceeding speed thresholds. The portable cameras can be moved to areas of concern to help improve overall traffic safety by focusing on changing driver behavior and decreasing traffic crashes, fatalities and severity of crashes related to speed.

The current locations for these cameras as of April 2026:

  • Brand Road
  • Dunniker Park Drive
  • Post Road
  • Rings Road

Dublin Police prioritizes transparency in safety initiatives. The Traffic Logix speed warning cameras collect license plate and vehicle information only. DACRA Tech processes the speed data and mails the warning letters to drivers. The company retains images for 60 days from the date a warning letter is sent.

Speed warning cameras are part of the data-driven and City Council-supported Slow Down Dublin campaign that seeks to foster safe streets and reinforce responsible driving. 

 

Category 1 Solutions:

  • Mobile Speed Trailers
  • Driver Feedback Signs
  • Education & Awareness

Category 2 Solutions:

  • Permanent Driver Feedback Signs
  • Police Observations and Engagement with Community Members
  • Speed Safety Cameras
  • Tactical Urbanism
  • Education & Awareness

Category 3 Solutions:

  • High-Visibility Law Enforcement
  • Signs and Markings
  • Horizontal Measures
  • Streetscape Improvements
  • Technology Solutions
  • Speed Safety Cameras
  • Vertical Measures
  • Education & Awareness

To support this data-focused initiative and provide transparency to the community, this dashboard has several areas showing speed data, traffic incident history and location of speed monitor devices.

New Technology Enhancing Speed Management

Dublin is enhancing its data-driven approach to speed management by using advanced traffic intelligence, powered by connected vehicle data and artificial intelligence. This technology provides real-time insight into how fast drivers are traveling across the entire roadway network.

The system continuously analyzes speed trends, identifies when and where speeding is most likely to occur and compares driver behavior to posted limits. By combining this data with crash history, traffic volume and roadway design, officers and City staff can pinpoint high-risk areas and deploy resources more effectively.

This shifts our approach from reactive enforcement to proactive, predictive public safety.  

Learn more about how this technology works by visiting Urban SDK.

Where Do Speed Limits Come From?

First, it is important to understand where the concept of speed limits originated. Most of our laws, including traffic regulations, are based on observations of the way reasonable people behave under most circumstances. Generally speaking, traffic laws that reflect the behavior of the majority of vehicle operators are found to be successful, while laws that arbitrarily restrict the majority of drivers encourage wholesale violations, lack public support, and usually fail to bring about desirable changes in driving behavior. This is especially true of speed limits.

Driving is an extension of social attitude and the majority of drivers behave in a safe manner as demonstrated by their favorable driving records.  In the case of speed limits, the safe speed on a roadway should be able to be determined, in large part, by observing how the majority of safe, prudent drivers are currently driving. Public acceptance of this concept is normally instinctive, but in some cases, emotion can cause individuals to reject this principle and rely, instead, on more comfortable and widely held misconceptions.

Common Misconceptions of Speed Limits

  • Speed limit signs will slow the speed of traffic and increase safety.
  • Raising a posted speed limit will cause an increase in the speed of traffic.

“Before and after” studies consistently demonstrate that there are no significant changes in traffic speeds following the posting of new or revised speed limits. Furthermore, no published research findings have established any direct relationship between posted speed limits and accident frequency.

Realistic speed limits serve as a clear reminder of reasonable speeds for nonconforming violators or drivers unfamiliar with the area and help inject logic into an otherwise arbitrary and often emotional issue.

Who Sets the Speed Limits?

Speed limits are under the jurisdiction of the state government. The Ohio Revised Code (ORC) establishes minimum speed limits for different types of roadways in section 4511.21. Here are examples of the ORC applied to municipal areas:

  • 15 miles per hour (mph) on an alley
  • 20 mph in a school zone (during restricted hours on school days)
  • 25 mph on a local (non-through) street or on a street within a business district
  • 35 mph on through routes or on a street within an urban district
  • 55-65 mph on freeways

View speed limits in the dashboard at the top of this page.

School Zones

School zones are generally defined as a section of roadway fronting a school between the school property lines. The speed limit in a school zone is 20 mph, and school zones are in effect during pickup and drop-off times during the school day. 

The typical morning and afternoon times that school flashers operate on normal school days for Dublin City Schools within Dublin city limits:

  • Elementary schools: 8:40-9:15 a.m. and 3:35-4 p.m.
  • Middle schools: 7:58-8:33 a.m. and 3:03-3:28 p.m.
  • Elementary and middle school shared sites: 7:58-9:15 a.m. and 3:03-4 p.m.
  • High schools: 7:25-8 a.m. and 1:45-2:10 p.m. and 2:37-3:02 p.m.

Changing Speed Limits

If a speed limit established by the ORC is not appropriate for a certain location, an engineering study may be submitted for consideration to the Ohio Department of Transportation. Upon review and approval from the state, the speed limit may be changed. The study includes data such as existing travel speeds, roadway character, development density, and crash history. The state has the authority to approve or disapprove any speed limit change request it receives.

For the full text in the ORC on speed limits, read more: http://codes.ohio.gov/orc/4511.21.

Sources:  Establishing Speed Limits – A Case of “Majority Rule” published by the Arizona Department of Transportation

Speed Limits Explained, Delaware County Engineer’s newsletter Building Bridges Volume 4, Issue 2

Traffic and Speed Survey Results

The Dublin Police Department uses speed-measuring devices to monitor traffic volume, average speed, high speeds and low speeds of roadways throughout the city. The results are used to help the department prioritize enforcement and other responsive efforts as well as educate the public.

A summary of all speed survey deployments is listed below by street name. Click your street to see the results. If your street does not appear and you would like to have a survey conducted, please contact the Dublin Police’s non-emergency number 614.889.1112 to make this request.

Glossary of Terms:
  • Average Speed — This is the average of all vehicles, which were registered by StealthStat.
  • 85th Percentile — This number represents that 85% of all vehicles were traveling at this speed or less.
  • Percent of Excessive Speeds — This represents the percent of the vehicles in the survey that were traveling more than 15 mph over the speed limit.
Latest Stats
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Public Records Request Overview

In order to support faster response and better tracking of requests, the City of Dublin uses JustFOIA to collect, respond to and manage public information requests.

Why JustFOIA?

JustFOIA is a Freedom of Information Act (FOIA) online application that helps streamline the open records request process for the community and improve efficiencies in getting requested information quickly and accurately.

The application lets community members submit requests for all city records, including police reports. Commonly requested information includes accident reports, copies of resolutions and body-camera video.

Submit a Public Records Request

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The complete Dublin City Code is available online at American Legal City Ordinance website. Information staff at the Dublin branch of the Columbus Metropolitan Library are available to help navigate this website.

Revised Charter of Dublin, Ohio

This Revised Charter, as adopted on March 19, 1996, became effective on July 4, 1996.

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