Statewide Survey
Statewide Survey Dashboard
A six-page dashboard displaying responses to the statewide survey regarding:
- road user behavior
- road user risk perceptions
- traffic safety enforcement
- family and employer rules and expectations
- traffic safety culture and bystander intervention
- survey respondent demographics
Sober Driving Reports
Cannabis Involvement Among Drivers in Fatal Crashes
Published March 2024
A two-page brief summarizing data from 2018 to present which is updated as new data is released.
Alcohol and Drug Impaired Driving: Report to Legislature
Published December 2023
This Report to the Legislature in response to HB 1125 provides a review of impaired driving involvement in fatal crashes and an overview of five strategies to prevent and reduce impaired driving.
Drug-Positive Driver Data Update
Published November 2023
A six-page brief outlining the methodology of drug-positive driver data updates from the Re-Evaluating the Prevalence of Drugged and Poly-Drug Driving in Washington State report.
Re-Evaluating the Prevalence of Drugged and Poly-Drug Driving in Washington State
Published November 2023
An in-depth report detailing updates to drug-positive driver data and review of non-active drug metabolites, non-impairing, and pharmaceutical drugs.
NHTSA FARS Alcohol Imputation: From a State’s Perspective
November 2022
A 43 minute webinar using data from NHTSA’s Fatality Analysis Reporting System (FARS).
Policy Brief: Changing Washington’s per se blood alcohol concentration (BAC) limit from .08% to .05% BAC
November 2022
A summary of information considering a lowering of the legal per se alcohol BAC limit in Washington State.
Victim Impact Panels: Who Benefits and Why?
February 2023
A two-page summary of a literature review followed by individual article/source summaries.
Focused Driving Reports
Distracted Driving Observation Survey
2023 Survey Results
A two-page brief summarizing the results of the distracted driving observation survey conducted in June 2023
Distracted Driving in the State During COVID-19
2020
An in-depth report describing the impact of COVID-19 response on distracted driving in Washington state in 2020.
King County Distracted Driving Survey
2018-2019/2021-2022
Results from the King County survey conducted 2018-2019 and 2021-2022 measuring behavior, acceptance, threat perception, and intentions. Includes differences over time and responses by sex and race/ethnicity.
Seat Belt & Child Restraint Reports
Child Passenger Safety Observational/Intercept Survey
February 2024
A three-page brief summarizing child restraint use and child passenger safety results from the 2023 observational/intercept survey.
Seat Belt Use in Washington State
2023
Washington State has conducted surveys of seat belt use since 1986 showing annual trends in usage.
Seat Belt Use on the Colville Indian Reservation
2019
An observational study of seat belt use conducted in partnership with the Confederated Tribes of the Colville Reservation.
Young Driver Reports
Policy Brief: Reducing the Risk of Injury and Fatal Crashes Among Young Drivers, 16 through 25 Years of Age
A review of 2016-2020 Washington data on the crash risks of young drivers who have and have not received driver education.
Neurocognitive Brain Development
Among Adolescents
A review of studies on adolescent brain development and its relation to driving.
Effective School Programs
A summary of studies providing insight on the types of school programs most effective at changing drinking and driving behavior among young drivers.
Motorcycle Reports
Positive Motorcycle Behaviors
in Clark County
A short report on safety and rider behavior during a motorcycle emphasis patrol in 2020.
Motorcycle Helmets
Laws, Effectiveness, and Economic Benefits
The effectiveness of motorcycle helmets in preventing or lessening head injuries among motorcyclists is now widely considered a settled matter by researchers. This brief report summarizes studies of motorcycle helmet effectiveness.
Motorcycle Lane-Sharing
(Lane-Splitting and Lane-Filtering)
A review of studies on the safety of lane sharing, the practice of riding along the paving lines between streams of traffic on public roads.
Speeding Reports
Driver Speeding in School Zones
Published December 2023
This brief provides the aggregate results from the 2023 driver speeding observation survey conducted in active school zones. Included are the results for drivers and bus drivers, and resources for slowing driver speeds in your community.
Driver Speeding in School Zones
Listed by School District
The WTSC conducted a driver speeding observation survey at over 120 schools in Washington State. These schools volunteered to participate in the survey. Each school was provided results. This page includes all the participating schools results, organized by school district.
State-of-the-State: Washington Traffic Fatalities
Published May 2023
A four-page report summarizing recent crash trends.
Speeding Drivers: Results from an Observational Survey
Published January 2023
A two-page brief summarizing the results of the 2022 speeding observational survey.
American Indian/Alaska Native Reports
Occupant Protection among American Indian/Alaska Native
Published February 2024
A two-page brief summarizing occupant protection among American Indian/Alaska Natives (AI/AN), 2018-2022.
A two-page brief summarizing 2018-2022 AIAN traffic deaths and rates.
General Traffic Safety
What if every car had automatic emergency braking?
Published March 2024
A two-page brief summarizing 2022 crashes by AEB preventable collision-type.
Unlicensed Drivers on Washington Roads
Published February 2024
A two-page brief summarizing fatal crashes from 2018-2022 involving unlicensed drivers.
Strategies and Technologies to Prevent and Respond to Wrong-Way Driving Crashes
Published December 2023
A report detailing strategies used in selected U.S. states to prevent or reduce wrong-way driving.
State of the State: Washington Traffic Fatalities
Published May 2023
A four-page brief summarizing numbers and rates of fatal crashes 2020-2022.
Do AV crash avoidance technologies keep us safe?
Published September 2019
A two-page summary of a literature review followed by individual article/source summaries.
Driving During the Day and Night, Darkness and Light
Published March 2019
A two-page summary of a literature review followed by individual article/source summaries.