Traffic Safety In-Depths & Reports

Impairment

Cannabis Involvement Among Drivers in Fatal Crashes
A two-page brief summarizing data from 2010 to present (updated as final data is released).
Published February 2022

Post-DUI Driver Crash Risk
A two-page summary of a literature review followed by individual article/source summaries.
Published June 2019

Marijuana Use, Alcohol Use, and Driving in Washington State: Emerging Issues with Poly-Drug Use on Washington Roadways
An in-depth report analyzing linked fatal crash and toxicology data 2008-2016, 2014-2015 roadside surveys, and self-report surveys.
Published May 2019

Mental Health and Substance Use Dual Diagnosis in Impaired Drivers
A two-page summary of a literature review followed by individual article/source summaries.
Published August 2018

Victim Impact Panels, Who Benefits and Why?
A two-page summary of a literature review followed by individual article/source summaries.
Published April 2018

Driver Toxicology Testing and the Involvement of Marijuana in Fatal Crashes, 2010-2014: A Descriptive Report
An in-depth report describing linked fatal crash and toxicology data 2010-2014 for detailed driver marijuana results.
Revised February 2016

Distraction

Distracted Driving Observation Survey Results
A two-page brief summarizing the results of the annual distracted driving observation survey 2019-2021.
Published December 2021

Distracted Driving in Washington State During COVID-19: 2020 Observation Survey, Enforcement, and Crashes
An in-depth report describing the impact of COVID-19 response on distracted driving in Washington state in 2020. The report summarizes new data and provides contextual explanations of changes to distracted driving behavior, enforcement of distracted driving laws, and monthly distracted driving fatal and serious injury crashes.
Published March 2021

Distracted Driving in Washington State, 2019: Crash Statistics, Enforcement, and Results from the Statewide Observation Survey
An in-depth report describing early impacts from the 2017 Driving Under the Influence of Electronics Act summarizing changes in crashes, enforcement, and driver observation surveys available through 2019.
Published March 2020

Distracted Driving in Washington State, 2016-2018: Results from the Annual Observation Surveys
An in-depth report analyzing the survey results for the state and individual counties.
Published November 2018

Seat Belts & Child Restraints

Seat Belt Use in Washington State 2021
An in-depth report analyzing the survey results for the state and individual counties.
Published February 2022

Seat Belt Use on the Colville Indian Reservation in Washington State 2019
An in-depth report analyzing the baseline and post-3 year results of the front seat occupant seat belt use observation survey.
Published November 2019

Statewide Estimates of Child Restraint Use Among Elementary Students 2014
An in-depth report analyzing the results of a school drop-off child passenger safety and restraint use observation survey.
Published August 2014

Young Drivers

Young Drivers and Brain Development
A two-page summary of a literature review followed by individual article/source summaries.
Published May 2017

Effectiveness of School-Based Programs
A two-page summary of a literature review followed by individual article/source summaries.
Published May 2014

Walkers & Bicyclists

Pedestrian-Driver Interactions
A two-page summary of a literature review followed by individual article/source summaries.
Published October 2018

Pedestrian Deaths and Distractions
A two-page brief summarizing fatal crash data from 2007-2016.
Published May 2018

Pedestrian Deaths and Impairment
A two-page brief summarizing fatal crash data from 2007-2016.
Published April 2018

Motorcyclists

Positive Motorcycle Behaviors in Clark County
A two-page brief summarizing officer observations of motorcyclist safety.
Published August 2020

Motorcycle Helmets: Laws, Effectiveness and Economic Benefits
A two-page summary of a literature review followed by individual article/source summaries.
Published March 2018

Motorcycle Lane Sharing
A two-page summary of a literature review followed by individual article/source summaries.
Published December 2017

General Traffic Safety

State of the State: Washington Traffic Fatalities
A four-page brief summarizing numbers and rates of fatal crashes 2019-2021.
Published June 2022

Unlicensed Drivers on Washington Roads
A two-page brief summarizing fatal crashes from 2016-2020 involving unlicensed drivers.
Published February 2022

American Indian/Alaska Native (AIAN) Traffic Deaths
A two-page brief summarizing 2016-2020 AIAN traffic deaths and rates.
Published February 2022

What if every car had automatic emergency braking?
A two-page brief summarizing 2018 crashes by AEB preventable collision-type.
Published November 2019

Do AV crash avoidance technologies keep us safe?
A two-page summary of a literature review followed by individual article/source summaries.
Published September 2019

Driving During the Day and Night, Darkness and Light
A two-page summary of a literature review followed by individual article/source summaries.
Published March 2019

Post 30-Day Mortality of Crash Serious Injuries
A two-page brief analyzing 2015-2016 linked crash-death records.
Published September 2018

Motor Vehicle Deaths in the American Indian/Alaska Native Community
A two-page brief analyzing rates of deaths 2007-2016.
Published June 2018