Research

A Multi-Site Examination for the Impact of Changes in Posted Speed Limit on Traffic Safety

Roadway Systems & Drivers

A Multi-Site Examination for the Impact of Changes in Posted Speed Limit on Traffic Safety

This study examined the effects of posted speed limit changes on traffic safety by conducting before-and-after assessments using crash and speed data from multiple sites.

July 2023 Research Brief

Change in Mental Models of ADAS in Relation to Quantity and Quality of Exposure

Emerging Technologies

Change in Mental Models of ADAS in Relation to Quantity and Quality of Exposure

This longitudinal driving simulator study assesses how exposure to different amounts and types of edge-case events influence the development and accuracy of drivers’ understanding of vehicle automation.

June 2023 Technical Report | Report Summary

Perceptions and Attitudes Towards Automated Vehicles, United States, 2021: Examining the Alignment Between Preferences for Adoption and Perceived Safety

Emerging Technologies

Perceptions and Attitudes Towards Automated Vehicles, United States, 2021: Examining the Alignment Between Preferences for Adoption and Perceived Safety

This study examined how well people’s attitudes regarding automated vehicles adoption were aligned with their perceptions of the safety of driving or riding in automated vehicles.

May 2023 Research Brief

Strategies to Educate the Public and Correct Misunderstandings About Cannabis Use and Impaired Driving

Ongoing Research

Strategies to Educate the Public and Correct Misunderstandings About Cannabis Use and Impaired Driving

with the University of California, San Diego

Project Synopsis

State of Knowledge on Cannabis: Pharmacology and Public Health Risks

Ongoing Research

State of Knowledge on Cannabis: Pharmacology and Public Health Risks

Project Synopsis

Strategies to Educate the Public and Correct Misunderstandings About Cannabis Use and Impaired Driving

Ongoing Research

Strategies to Educate the Public and Correct Misunderstandings About Cannabis Use and Impaired Driving

with the Pacific Institute for Research and Evaluation

Project Synopsis

Developing a Near-Miss Reporting System for Roadside Responders

Ongoing Research

Developing a Near-Miss Reporting System for Roadside Responders

Project Synopsis

Training on ADAS: Developing Effective Training that Drivers Will Use

Ongoing Research

Training on ADAS: Developing Effective Training that Drivers Will Use

Project Synopsis

Drowsiness and Decision Making During Long Drives: A Driving Simulation Study

Driver Behavior & Performance

Drowsiness and Decision Making During Long Drives: A Driving Simulation Study

This report presents the results of a driving simulation study designed to assess the extent to which drowsy drivers are aware of their own drowsiness as well as factors influencing their decisions regarding whether to continue driving or stop for a break.

March 2023 Technical Report | Report Summary

Estimating How Many Crashes Involve Drowsy Driving Using Data Available in State and National Crash Databases

Ongoing Research

Estimating How Many Crashes Involve Drowsy Driving Using Data Available in State and National Crash Databases

Project Synopsis