• Overview and Background
• Chapter 30.66B SCC (select Title 30 and then Chapter 30.66B)
• Currently Adopted Public Works Rules
• Ultimate Capacity
• Impact Mitigation Fee Credit

Reciprocal Traffic Mitigation Agreements, Forms & Information

Traffic Study Tools & Information for Developers & Traffic Consultants

• Turn Lane Channelization Analysis Guidelines (November 2014)
  
  • Left Turn Lane Channelization Analysis shall be completed using the Guidelines for Left–Turn Lanes from the ITE 1990 Compendium of Technical Papers. (November 2014)
  • Right Turn Lane Channelization Analysis shall be completed using the Right-Turn Lane Guidelines found in section 1310.04(3) and Exhibit 1310-11 of the WSDOT Design Manual. (November 2014)
• Arterial Unit Categories (October 2015)
• Key Intersections (November 2017)
• Map - Arterial Units (May 2018)
• Map - Arterial Units Status (May 2018)
• Map - Key Intersections in Transportation Service Area A North
• Map - Key Intersections in Transportation Service Area A South and B
• Map - Key Intersections in Transportation Service Area C
• Map - Key Intersections in Transportation Service Area D, E and F
• Required Format for Trip Distributions (May 2017)
• State Highways of Statewide Significance as Designated by WSDOT
• Synchro Calibration Revision
• Requirements for Traffic Studies with Future Level-of-Service Analysis (January 2017)

Annual Concurrency Reports

• Overview of the Concurrency Management System
• 2012 Report
• 2013 Report
• 2014 Report
• 2015 Report
• 2016 Report
• 2017 Report (April 1, 2016 through March 31, 2017)
• 2017 Report (January 1 through December 31, 2017)