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Schools Zones; Keeping it Slow, Keeping it Safe

Speed hump DSCN0168 RESIZEThis summer SDOT is installing speed humps in school zones at four schools in Seattle. (What’s a speed hump, you say? See our previous blog posting for the technical explanation). Lowering vehicle speed is one of the ways SDOT improves safety on the walking and biking routes to school. National studies show that a relatively small reduction in speed can make a big difference in safety for pedestrians. In Europe, speed humps are sometimes called “sleeping policemen” because they reinforce slower speeds and good behavior even at times when school is not in session, making schools and playgrounds more accessible to neighbors at all times of the day, throughout the year.

Research shows that speed humps are an effective tool not only at reducing speed but also at improving safety. The Institute of Traffic Engineers found a 13 percent reduction in collisions at locations where speed humps were installed. After SDOT installed speed humps near Graham Hill and Highland Park Elementary Schools, the percentage of drivers exceeding the speed limit by more than 10 miles per hour decreased by 80 percent at each school.

Speed hump and school bus DSCN0186 RESIZESpeed humps will be constructed on NE 130th Street near Olympic Hills School; on NE 80th Street near Thornton Creek School; on 30th Avenue NE near Eckstein Middle School; and on 30th Avenue SW near Roxhill School and Explorer Middle School. Construction is expected to be completed by the end of August, ready to serve school safety on the first day of school in September.

For more information about SDOT’s Safe Routes to School program, please visit our website:

If you have questions or comments Safe Routes to School, please contact: Brian Dougherty, SDOT’s Safe Routes to School Coordinator by phone at 206-684-5124 or email at