Neighborhood Traffic Calming
Redmond's Neighborhood Traffic Calming Program is part of the City's commitment to safety and livability of our neighborhoods. Through active participation by you and your neighbors, we can identify the problem, plan the approach, implement the solutions, and evaluate the effectiveness.
Request for Consideration
Fill out the Report an Issue / Request a Service Form for review by City staff and include as much detail as possible regarding your Neighborhood Traffic Calming concern. The request will be reviewed by City staff, which may includes collection of traffic data. You will be contacted and informed of the findings once the review is complete.
If Approved for the Program
The program has two levels of treatments:
- Level I- focuses on targeted enforcement, installation of temporary speed trailers, brush trimming, pavement markings, and signage.
- Level II- If Level I measures prove ineffective at reducing speeds and traffic studies show the 85th percentile speed is at or above 5mph over the speed limit on 25 mph & 30 mph roadways, Level II measure will be considered. The 85th percentile must be 10mph over the posted speed for roadways with a posted speed of 35 mph and above. Level II treatments include traffic calming devices such as speed humps, traffic circles and medians. Each Traffic Calming Device must meet specific criteria to be eligible for installation.
Level 1 - Low Cost Treatments Level 2 - Higher Cost Treatments
Posting appropriate traffic control signs is a Phase I solution. Signs may include speed limit, parking, dead-end, school signs, etc. The sign pictured at the right directs drivers around a center median.
Legends and other markings on neighborhood roadways can be a Phase I solution. Pavement markings can include center lines, foglines, school crossings, bike lanes and speed limits. Providing marked parking lanes on both sides of a street narrows a road and can reduce vehicular speeds.
Sight distance is improved when brush is trimmed and vegetation is cleared by homeowners or City crews.
Increased enforcement by the Redmond Police Department can be a recommended Phase I solution. When reporting frequent and specific neighborhood speeders, providing police with license plate numbers, location, and times of day can make targeted enforcement most productive.
A portable trailer with a radar unit detects vehicular speed, showing drivers their "actual" speed versus the posted speed limit. This information helps to promote compliance with the posted speed.
Curb bulbs are a form of roadway narrowing at intersections that reduce the street width from curb to curb. They shorten crossing distances for pedestrians and draw attention to pedestrians via raised peninsulas. They also tighten the curb radii at the corners, reducing the speeds of turning vehicles. They can be used to create protected on-street parking bays.
Curb bulbs come in a wide variety of sizes and typically result in speed decreases of 7%. They are easily combined with a raised intersection or raised mid-block crosswalk. Curb bulbs placed opposite one another mid-block create a "choker," which can result in more significant speed reduction.
Narrowing a street with pavement markings, on-street parking, curb bulbs, or center medians can help improve safety by reducing vehicular speed, making streets easier to enter from driveways and side streets, and reducing the time and distance that pedestrians are exposed to traffic when crossing. Typical speed reductions are 3 MPH, or 7%. Narrowing can lessen the impact of motor vehicles on a neighborhood.
Raised, elongated islands placed on the centerline of streets are commonly called medians. Medians come in many sizes and can be designed to follow the curvature of a street. Medians are often landscaped to provide a visual amenity. Fitted with a gap to allow pedestrians to walk through at a crosswalk, they are often called "pedestrian refuges".
Medians can be used to narrow lanes, or to provide physical separation from traffic. While they provide an average 7% decrease in travel speeds, their speed-reducing effect is somewhat limited where there is an absence of any vertical or horizontal deflection.
Distinctly different than the "speed bumps" found in many private parking lots, speed humps, speed tables, speed cushions, and raised crosswalks are raised areas of pavement placed across a road, engineered to safely moderate the speed of traffic. Typically ranging between 3 and 4 inches in height and 12 to 22 feet long (in the direction of travel), they are often placed in series or intermixed with other traffic calming measures to provide continuous speed control along a corridor.
These devices typically reduce average speed by 4 to 7 MPH, and reduce the frequency and severity of collisions by 11 to 45%. One variation - the speed cushion is designed with gaps that allow emergency vehicles to straddle the device, thereby reducing or eliminating the 1 to 9 seconds of delay generally associated with speed humps. Raised crosswalks, constructed like a speed table, are marked with high visibility crosswalk markings, and can be found at mid-block locations where speed control is an issue. They not only slow traffic, but also make pedestrians, especially small children, more noticeable to drivers.
Traffic circles are raised islands, placed in intersections, around which traffic circulates. Traffic circles are good for calming intersections, especially within neighborhoods, where large vehicle traffic is not a major concern, but speeds, volumes, and safety are problems. Traffic circles have the advantage of calming two streets at once. They may require the elimination of some on-street parking.
Average speed reductions of 4 MPH are typical as are collision reductions of 11%. This device functions best at intersections that have four legs.
A modern roundabout is a circular intersection where traffic flows around a center island. Roundabouts are not traffic circles or the older-style rotary traffic islands found in some East Coast and European cities. Roundabouts have proven themselves to be safe and efficient.
Since vehicles entering the roundabout are required to yield to traffic in the circle, more vehicles can move through the intersection with less delay. The unique one-way design of roundabouts also accommodates the turning radius of large vehicles, like semi-trucks and buses.
A study done by the Insurance Institute for Highway Safety found that where roundabouts have been installed, motor vehicle crashes have declined by about 40 percent, and injury crashes have been reduced by approximately 80 percent!
This significant reduction in accidents is largely due to the lower number of conflict points. Conflict points are those areas where collisions could occur as traffic paths cross. At a traditional four-way intersection there are 32 potential conflict points. In a roundabout that number is reduced to eight, and those serious right angle crashes are virtually eliminated.
When project costs are higher than the Neighborhood Traffic Calming Program can support, the projects will be added to the list of Targeted Safety Improvement Projects. These projects are ranked based on scores given for complexity, cost, and safety risk. Typically one to two Targeted Safety Improvement projects are installed per biennium.
Neighborhood Yard signs
City of Redmond Neighborhood Yard Sign Program
The city is offering these yard signs to help raise awareness of traffic safety in neighborhoods.
Currently, there are four different signs with traffic safety messages.
A maximum of 2 signs will be given per household and the total number may be limited in any one neighborhood.
If you would like to request a sign, please submit a service request using the city's "Report an Issue" tool using the issue type: Traffic Concerns: Neighborhood Traffic Calming.
- Larger stop sign, stop bar, and center line markings at 163rd Ave NE & NE 99th St
- Large stop sign, stop bar, and center line markings at 162nd AVE NE & NE 98th St
- New School Zone signs on NE 60th St, 152nd Ave NE & NE 116th St
- LED Flashing sign at NE 104th St & PSE Trail crossing
- Beagle Mascot pavement markings at Norman Rockwell Elementary @(Model.BulletStyle == CivicPlus.Entities.Modules.Layout.Enums.BulletStyle.Decimal ? "ol" : "ul")>
- Median signs and "Share the Road" Bike lane sign on NE 60th St
- Marked crosswalk at 180th Ave NE and NE 24th St
- Flashing Beacons added to flashing sign on 140th Ave NE & NE 80th St
- New Rectangular Rapid Flashing Beacon (RRFB) crossing at NE 104th St & 172nd AVE NE
- New Rectangular Rapid Flashing Beacon (RRFB) crossing at140th AVE NE & NE 74th St @(Model.BulletStyle == CivicPlus.Entities.Modules.Layout.Enums.BulletStyle.Decimal ? "ol" : "ul")>
- New Rectangular Rapid Flashing Beacon (RRFB) crossing at NE 90th St & 161st AVE NE
- Delineators at speed humps on 173rd Ave NE, west of West Lake Sammamish Parkway
- In-street Pedestrian sign at Cleveland St mid-block crossings
- In-street Pedestrian sign at 140th AVE NE & NE 74th St @(Model.BulletStyle == CivicPlus.Entities.Modules.Layout.Enums.BulletStyle.Decimal ? "ol" : "ul")>
- Speed Radar Sign westbound on NE 95th St
- RRFB crossing on NE 79th St & 169th Ave NE at Anderson Park @(Model.BulletStyle == CivicPlus.Entities.Modules.Layout.Enums.BulletStyle.Decimal ? "ol" : "ul")>
- In-street pedestrian sign at NE 79th St & 169th Ave NE, 168th AVE NE & 166th Ave NE
- In-street pedestrian sign at NE 116th St & 179th Pl NE Einstein Elementary School Crossing @(Model.BulletStyle == CivicPlus.Entities.Modules.Layout.Enums.BulletStyle.Decimal ? "ol" : "ul")>
- In-street pedestrian sign at Old Redmond Rd & NE 68th St @(Model.BulletStyle == CivicPlus.Entities.Modules.Layout.Enums.BulletStyle.Decimal ? "ol" : "ul")>
- NE 104th St- 179th Ave NE to 184th Ave NE traffic calming and pedestrian safety
- NE 98th St, NE 99th St & 162 Ave NE cut thru traffic and speeding mitigations
- Old Redmond Rd & NE 70th St traffic calming and pedestrian safety
- Redmond Way & 140th Ave NE eastbound right turn lane calming and pedestrian safety @(Model.BulletStyle == CivicPlus.Entities.Modules.Layout.Enums.BulletStyle.Decimal ? "ol" : "ul")>
- Old Redmond Rd &148th Ave NE southbound right turn lane calming and pedestrian safety
- 140th Ave NE & NE 80th St traffic calming
- 188th Ave NE & NE 65th St traffic calming and pedestrian safety
- NE 24th St-West City limits to West Lake Sammamish Parkway traffic calming using buffered bike lanes @(Model.BulletStyle == CivicPlus.Entities.Modules.Layout.Enums.BulletStyle.Decimal ? "ol" : "ul")>