How bad does the traffic need to be to consider Traffic Calming?
Traffic calming devices selected for consideration will be those appropriate for the type of problem identified. The Department of Engineering will field investigate those requests where a street is determined to both eligible and a petition of support is received by the Director of Engineering. With speeding concerns, the 85th percentile speed must be 8 or more miles per hour over the speed limit. (The 85th percentile speed is the speed at which 85 percent of the traffic is traveling at or below.) Speed samples will be recorded for a 24-hour period.



Cut-through traffic concerns must satisfy one of the following conditions:

  • Cut-through traffic represents 40% or more of the total one-hour volume and a minimum 150 cut-through trips occur in one hour.

  • Cut-through traffic represents 40% or more of the total volume for two consecutive hours.

If you have any questions, please email the Department of Engineering.

Show All Answers

1. What are the options available under the city’s policy?
2. What kind of qualifying criteria does a city street have to meet to be covered by the city’s policy?
3. How does the Neighborhood Traffic Management process start?
4. How bad does the traffic need to be to consider Traffic Calming?
5. What are the petition requirements?