An Evaluation of Data from Drivers Arrested for Driving Under the Influence in Relation to Per se Limits for Cannabis
This study examines the relationship between toxicological test results and performance on a battery of physiological and psychomotor measures used by law enforcement officers among drivers arrested for DUI.
May 2016 // Full Report PDF // Fact Sheet PDF
Prevalence of Marijuana Use Among Drivers in Fatal Crashes: Washington, 2010-2014
This study quantifies the prevalence of marijuana involvement in fatal crashes in the state of Washington in years 2010 – 2014, and examines whether the prevalence changed after the legalization of recreational use of marijuana took effect in the state.
May 2016 // Full Report PDF // Fact Sheet PDF
Driving Under the Influence of Alcohol and Marijuana: Beliefs and Behaviors, United States, 2013-2015
The purpose of this study was to provide estimates of the prevalence of self-reported driving under the influence of alcohol and marijuana, and related perceptions and beliefs among U.S. drivers ages 18 and older.
May 2016 // Full Report PDF // Fact Sheet PDF
Overview of Major Issues Regarding the Impacts of Alcohol and Marijuana on Driving
This document provides an overview of issues related to marijuana consumption, driving impairment and blood testing as well as the potential impacts of social and legal factors.
March 2016 // Research Brief PDF
Advancing Drugged Driving Data at the State Level
The objective of this project is to identify and recommend strategies for improving state-level data on drugged driving by addressing the most significant barriers that impede state efforts to collect and compile such data.
March 2016 // Full Report PDF // Fact Sheet PDF
2015 Traffic Safety Culture Index
This report presents the results of our annual Traffic Safety Culture Index survey, providing data on the attitudes and behaviors of the American public with respect to key traffic safety topics.
February 2016 // Full Report PDF // Fact Sheet PDF
Motor Vehicle Crashes, Injuries, and Deaths in Relation to Weather Conditions, United States, 2010-2014
This study investigated the number of motor vehicle crashes, injuries, and deaths that occurred in the United States in years 2010-2014 in relation to weather conditions and roadway surface conditions.
January 2016 // Full Report PDF // Fact Sheet PDF
Prevalence of Self-Reported Drowsy Driving, United States: 2015
This study provides updated estimates of the prevalence of self-reported drowsy driving based on data from a nationally-representative survey of drivers conducted in 2015.
November 2015 // Full Report PDF
Using Naturalistic Driving Data to Assess Vehicle-to-Vehicle Crashes Involving Fleet Drivers
This report examines behaviors observed in crashes of fleet vehicles captured on in-vehicle video cameras.
June 2015 // Full Report PDF
Did the Great Recession Keep Bad Drivers Off the Road?
This study examines whether the Great Recession contributed to reductions in fatal crashes by disproportionately reducing the amount of driving done by groups of drivers that have greater rates of crash involvement.
May 2015 // Full Report PDF