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Traffic Safety In-Depths
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Reports
Impairment
Marijuana Use, Alcohol Use, and Driving in Washington State: Emerging Issues with Poly-Drug Use on Washington Roadways
Driver Toxicology Testing and the Involvement of Marijuana in Fatal Crashes, 2010-2014: A Descriptive Report
2013 Washington Impaired Driving Work Group Report
Evaluation of the Washington State Ignition Interlock Pilot Program 2009
Distraction
Distracted Driving in Washington State, 2016-2018: Results from the Annual Observation Surveys
Young Drivers
Young Driver In-Depth
Speeding
Speeding In-Depth
Automated Speed Enforcement Pilot Project Evaluation: Final Report
Occupant Protection
Seat Belt Use in Washington State, 2018
2014 Statewide Estimates of Child Restraint Use Among Elementary Students
WTSC Grant-funded Research Reports
Procedural Justice and Traffic Stops: Analyzing Police and Community Perspectives through Survey and Recorded Observational Research – January 2019
The Role of THC and Other Intoxicants in Fatal Crashes in Washington State – January 2018
Target Zero Plan
Washington Highway Safety Performance Plan
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