The 85% speed is the commonly accepted engineering value indicating the speed at which 85% of drivers fall under and is found to be the speed at which the majority of drivers feel is a safe speed given the roadway conditions and surrounding environment. The 85% speed is also the value typically used to set speed limits and evaluate compliance with speed limits.
Residential roadways with a consistent speeding problem which may be effectively altered with traffic calming device installation typically have greater than 3% of drivers traveling at greater than 10 mph over the speed limit.
Based upon the cumulative results of the neighborhood traffic data, it has been determined that traffic calming device installation is necessary upon 35th Ave.
A survey was performed in January of 2024, in which all properties within 600' of a proposed traffic calming device or whose sole access(es) would be impacted by traffic calming device installation were solicited. To move forward with the installation, greater than 60% of respondents were needed to tally "yes" for the proposal. 60% approval was not met and therefore the project will not proceed.
This NTS project included the installation of five (5) speed tables proposed at the following locations:
- 3510 98th St. NE
- 9529 35th Ave. NE
- 3506 94th Pl. NE
- 9207 35th Ave. NE
- 3506 91st St. NE