The diverter’s purpose is to help create a neighborhood greenway where people of all ages, all abilities can feel comfortable using all modes, such as riding bicycles and walking.
To achieve this, the greenway’s design aims to reduce the number and speeds of the automobiles that travel along it—even as traffic counts increase on other streets.
Kirkland’s transportation staff evaluated several traffic-calming devices for this purpose: speed humps, for example, street-narrowing and traffic circles. At 128th Avenue Northeast’s intersection with Northeast 100th Street, however, the diverter emerged as the most effective and most popular candidate.
During the 2016 design process, residents said they preferred the diverter, in concept, to speed humps. And Kirkland’s transportation planners found that a diverter at 128th Avenue Northeast’s intersection with Northeast 100th Street would be more effective at reducing the number and speeds of automobiles than speed humps.