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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 on the Colville Indian Reservation in Washington State, 2019
Seat Belt Use in Washington State, 2018
2014 Statewide Estimates of Child Restraint Use Among Elementary Students
WTSC Grant-funded Research Reports
Measuring Current Traffic Safety Culture via Social Media Mining
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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