Requests from Cities or Counties
If a city or county thinks the speed for a particular street or highway should be changed, it can make a request to ODOT for a review and investigation.
Submitting a Request:
Cities and counties may submit requests to ODOT via our online request form. Once received, we initiate an investigation to determine if a speed zone should be changed.
Additional documents may be submitted by replying to the automated acknowledgement email received after submittal.
ODOT's regional traffic engineering staff conducts an investigation using nationally-accepted traffic engineering standards and procedures. Factors we will consider include:
- Crash history.
- Roadside culture.
- Traffic volumes.
- Roadway alignment, width and surface.
- Motor vehicle speeds.
A major factor in establishing speed zones is consideration of the 85th percentile speed. This is the speed at or below which 85 percent of the vehicles are traveling. This is used as an indication of the speed most drivers feel is reasonable and safe.
When our investigation is complete, we prepare a report, with photographs, detailing the existing conditions and proposed changes. The report is sent to the city or county for review.
If the city or county agrees with the recommendation, the new speed zone is established.
If ODOT and the local road authority cannot reach agreement on the setting of a speed zone, the speed zone request is referred to the Speed Zone Review Panel. The panel is comprised of representatives of the Oregon Transportation Safety Committee, the Oregon State Police, the Association of Oregon Counties, the League of Oregon Cities, and ODOT.
The panel hears ODOT's recommendations and testimony from the local road authority and makes the final decision.
It is the responsibility of the road authority to install new speed zone signs.
Requests from Private Citizens
Regarding city streets or county roads: Please contact your local jurisdiction.
Regarding state highways outside of city limits: Please email ODOT's Traffic Roadway Section at ODOTSpeedZoning@odot.state.or.us requesting a review.