Traffic Analysis Resources 

• WSDOT Traffic Analysis Guidebook (pdf 151 kb)
• WSDOT VISSIM Protocol
• Oregon's VISSIM Protocol (pdf 3 mb)
• WSDOT SIDRA Policy and Settings  (pdf 292 kb)
• WSDOT Synchro and SimTraffic Protocol [ver. 10] (pdf 513 kb)
• Traffic Analysis Tools Primer
• Decision Support Methodology for Selecting Traffic Analysis Tools
• Guidelines for Applying Traffic Microsimulation Modeling Software
• NCHRP Report 765: Analytical Travel Forecasting Approaches
• Transportation Data & GIS
• WSDOT Design Manual Ch 320: Traffic Analysis   (pdf 642 kb) 

These electronic tools help planners and engineers analyze likely traffic operations impacts due to proposed changes in the following: system or network, land use, development, background traffic growth, population, or modal shifts.

• Synchro
• TSIS (CORSIM)
• SIDRA
• TRANSYT-7F

Need help with this page, contact:
Doug McClanahan
mcclando@wsdot.wa.gov
360-705-7984