Library & research reports

Take a look at available library services and find current information about transportation research projects and reports.

Discover library services available to you, search our collections, access digital materials and contact our librarians.

Learn about applied transportation research conducted by WSDOT. Find information on current research projects, access research reports, watch our webinars, view our Research Procedures Manual and contact our research managers.

Check out these tools to find definitions of terms and decode common abbreviations used by WSDOT.

Traffic fatality crashes on Washington public roadways

increased 56% in March 2021 compared to March 2020.

11,906 incidents responded to

by WSDOT’s incident Response teams during the third quarter of 2021, nearly 6% more than same quarter in 2020.

WSF ridership was nearly 5.7 million in the first quarter of fiscal year 2022,

which was 1.6 million (38.3%) higher than the corresponding quarter in FY2021