Sober Driving Reports
Cannabis Involvement Among Drivers in Fatal Crashes
Published April 2023
A two-page brief summarizing data from 2012 to present which is updated as new data is released.
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).
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.
Post-DUI Driver Crash Risk
June 2019
A summary of information considering a lowering of the legal per se alcohol BAC limit in Washington State.
Marijuana Use, Alcohol Use, and Driving in Washington State: Emerging Issues with Poly-Drug Use on Washington Roadways
May 2019
An in-depth report analyzing linked fatal crash and toxicology data 2008-2016, 2014-2015 roadside surveys, and self-report surveys.
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
2019-2022
A two-page brief summarizing the results of the annual distracted driving observation survey 2019-2022.
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
Seat Belt Use in Washington State
2022
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
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.
General Traffic Safety
State of the State: Washington Traffic Fatalities
Published May 2023
A four-page brief summarizing numbers and rates of fatal crashes 2020-2022.
Unlicensed Drivers on Washington Roads
Published April 2023
A two-page brief summarizing fatal crashes from 2017-2021 involving unlicensed drivers.
What if every car had automatic emergency braking?
Published November 2019
A two-page brief summarizing 2018 crashes by AEB preventable collision-type.
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.
Speeding in School Zones
Listed by School District
Learn more about the importance of traffic safety in school zones. What can you do to reduce the risk of injury and serious harm to drivers, passengers, and active pedestrians.