The city often receives requests for the installation of stop signs to reduce speeds on residential roadways.
Are stop signs effective for speed control?
According to the Minnesota Local Road Research Board, stop signs are meant to assign right-of-way to motorists to prevent crashes – but stop signs are not an effective tool for speed control.
Studies have shown that when stop signs are used inappropriately, motorists may intentionally violate stop signs and increase their speed between stop signs to make up lost time from what they perceive as an unreasonable stop.
The City of Plymouth frequently receives requests to post speed limit signage in residential areas to influence motorists to slow down. However, all residential roadways in Minnesota have a speed limit of 30 mph, as mandated by the state.
Are additional speed limit signs effective in reducing speeding in residential areas?
Studies show there is little change in speed patterns after additional speed limit signs are posted, nor is it effective to reduce the speed limits on residential roadways. According to the Minnesota Local Road Research Board, motorists are influenced by the conditions of the road and will drive a speed at which they feel comfortable.
Minnesota Department of Transportation has published a brochure regarding speed limits in Minnesota. Download the brochure (PDF).
Neighborhood Traffic Calming Program
To promote safety and livability in residential neighborhoods, the City of Plymouth created the Neighborhood Traffic Calming Program, which uses a two-phase approach to handle signage installation requests. The City of Plymouth also follows the Minnesota Manual of Uniform Traffic Control for requests, which provides a uniform policy for traffic control devices on all public streets, roads and highways within the State of Minnesota.
The form below is Step 1 of the first phase of the Neighborhood Traffic Calming Program.
Phase One Process:
- Initial Request – Fill out Traffic Study Request Form (see below).
- Data Collection – City staff will collect data. If analysis of data does warrant resident’s request or if the solution is beyond the control of the City, a response will be sent to the resident, and no further analysis will be completed.
- Educational and Enforcement Efforts – If data shows a traffic problem, educational and police enforcement efforts should be considered.
- Analysis of Effects – If first-phase techniques (educational and enforcement) have been implemented and a reasonable amount of time has passed (typically six months to one year), staff will again collect data to determine the effects of the education/enforcement efforts. If not effective, proceed into the second-phase process.
Phase Two Process:
Consider devices that structurally change the characteristics of the roadway, including all-way stop signs, curb extensions, center median islands and more.
- Petition process
- Development of alternatives
- Presentation of traffic calming alternatives
- Presentation of final design
- Presentation to City Council and assessment resolution
- Construction and final evaluation