King County Road Services - Frequently-asked questions

First check our GIS Traffic Count website. If there isn't a count location on the map for the road you need data, please call 206-263-6127 or e-mail us to request a search of our count database.

If a traffic study has been performed on the road in front of your business we can break down the data, lane by lane, utilizing our traffic count software report. You can go to our GIS Traffic Count website to see the count data that we have posted. For more specific information about our Traffic Count Program please contact the King County Road Services Division's Traffic Engineering and Maintenance Section via e-mail or by phone at 206-296-6596 or 1-800-527-6237 toll-free.

If the road is an arterial in our coverage count or key count program, or if a special request for a study was made recently by a county engineer to evaluate the road, we will have that information. You can go to our GIS Traffic Count website to see the count data that we have posted. For more specific information about our Traffic Count Program please contact the King County Road Services Division's Traffic Engineering and Maintenance Section via e-mail or by phone at 206-296-6596 or 1-800-527-6237 toll-free.

We are not able to predict the traffic volume for future years with past years' data. Population changes, economic conditions, planning and development, and zoning all impact traffic volume growth. Population has increased in many areas where traffic volumes decreased due to the increase in the price of gasoline. For more information please contact the King County Road Services Division's Traffic Engineering and Maintenance Section via e-mail or by phone at 206-296-6596 or 1-800-527-6237 toll-free.