Skip Top Navigation

Traffic Laws, Rules, Standards, and Best Practices for Cities and Counties

For questions, assistance, or recommendations for specific situations contact the Traffic Services Manager.


 

WA State Capitol building with State Patrol car.

Traffic-Related State Laws & Rules



Search for State Laws and Rules

Manual on Uniform Traffic Control Devices

Definitions and Roles

Rules for Drivers

Jurisdictional Issues

 

Traffic Control Devices and MUTCD


Federal Laws and Standards

The United States Code of Federal Regulations (CFR) Title 23 Highways, Section 655.603 requires that states follow the Manual on Uniform Traffic Control Devices (MUTCD). Revised Code of Washington (RCW) 47.36.030 requires that agencies in Washington State follow uniform standards for the placement of traffic control devices. Washington Administrative Code (WAC) 468-95 makes the 2009 MUTCD that standard. WAC 468-95 modifies sections of the MUTCD for Washington State's laws and unique circumstances. As of December 19, 2011, the 2003 MUTCD can no longer be used in Washington State.

Washington State Laws and Rules

Best Practices

Additional Rules and Standards for Local Agencies

Some cities and counties adopt WSDOT or other standards. See your city or county code for these standards. For projects with Federal funding, see the Local Agency Guidelines (LAG) manual.