King County Road Services - Traffic signs

About

King County's traffic code (Chapter 46.04 King County Code) is based on the Washington Model Traffic Ordinance (Washington Administration Code Chapter 308-330) which is in turn based on the Manual on Uniform Traffic Control Devices, or MUTCD developed by the Federal Highway Administration of the U.S. Department of Transportation.

The MUTCD contains standards for traffic control devices that regulate, warn, and guide road users along the highways and byways in all 50 States. Traffic control devices are important because they optimize traffic performance, promote uniformity nationwide, and help improve safety by reducing the number and severity of traffic crashes.

Related information

Federal Highway Administration

• Manual on Uniform Traffic Control Devices, or MUTCD
  • Overview
  • Sign Shapes and Colors
  • MUTCD Millennium Edition

Washington State Department of Transportation

• Washington State Manual on Uniform Traffic Control Devices
• Traffic Manual March 2002

King County

• King County Code Title 46 Traffic Code (.pdf)

To report damaged traffic signs

In unincorporated King County call 206-296-8100 or 1-800-527-6237. In cities within King County, contact the public works or transportation department.