drowsy driver behind the wheel

Driver Behavior & Performance

Countermeasures to Reduce Drowsy Driving: Results of a Literature Review and Discussions with Experts

This report presents the results of a literature review and discussions with experts to summarize the current state of knowledge on the effectiveness of countermeasures intended to reduce drowsy driving and the associated motor vehicle crashes, injuries, and deaths.

September 2022 // Technical Report // Fact Sheet

severe car crash and ambulance

Roadway Systems & Drivers

Traffic Fatalities on Urban Roads and Streets in Relation to Speed Limits and Speeding, United States, 2010–2019

This research brief examines characteristics of traffic fatalities on urban roads and streets in relation to various factors, with an emphasis on the speed limits present at crash locations, as well as the role of speeding.

July 2022 // Research Brief

Driver Behavior & Performance

Use of Potentially Impairing Medications in Relation to Driving, United States, 2021

This study investigates the prevalence of recent use of potentially driver impairing medications and driving after use among U.S. drivers.

July 2022 // Research Brief

Emerging Technologies

Public Understanding and Perception of Automated Vehicles, United States, 2018 – 2020

This research brief continues examining public trust in, adoption of, and concerns about different levels of automated vehicles by looking into the dynamics of these measures over time.

April 2022 // Research Brief

Autonomous Vehicles

Emerging Technologies

An Examination of How Longer-Term Exposure and User Experiences Affect Drivers’ Mental Models of ADAS Technology

This project assesses the understanding or mental models of naïve users of adaptive cruise control (ACC) and evaluate how their mental models change with exposure to the systems over the first six months of ownership.

March 2022 // Technical Report // Fact Sheet

man on phone while driving

Driver Behavior & Performance

Effectiveness of Distracted Driving Countermeasures: An Expanded and Updated Review of the Scientific and Gray Literatures

This review of literature augments the findings of our prior review with the most recent publications concerning safety-based outcome measures, the current state of knowledge regarding non-safety-based outcome measures, and a review of commercially available relevant apps.

March 2022 // Research Brief

Emerging Technologies

2021 Virtual Forum on the Impact of Vehicle Technologies and Automation on Users: A Summary Report

This report summarizes presentations, discussion, and outcomes from a virtual stakeholder forum on the impact of 21st-century automotive technologies on users.

March 2022 // Technical Report

police light at crash scene

Driver Behavior & Performance

Self-Reported Risky Driving in Relation to Changes in Amount of Driving During the COVID-19 Pandemic

This study examines the prevalence of self-reported risky driving behaviors of drivers who increased their driving during the first several months of the COVID-19 pandemic compared with those who reduced or did not change how much they drove.

February 2022 // Research Brief

Roadway Systems & Drivers

Improving Roadside Responder Crash Data: Outcomes from an Expert Roundtable Discussion

This brief highlights a roundtable discussion that sought to identify ways to improve data about the safety of incident response and emergency services personnel working on the side of the road. Recommendations are made based on information provided by the panel of experts.

December 2021 // Research Brief

Vulnerable Road Users

Advanced Driver Assistance Systems and Older Drivers: Changes in Prevalence, Use, and Perceptions Over 3 Years of the AAA LongROAD Study

This study examines changes in the prevalence of advanced driver assistance systems (ADAS) among a large sample of older drivers, as well changes in how these drivers perceived and learned to use ADAS.

December 2021 // Research Brief