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The National Highway Traffic Safety Administration today released its early estimates of traffic fatalities for the first half of 2023, estimating that traffic fatalities declined for the fifth straight quarter. An estimated 19,515 people died in motor vehicle traffic crashes, representing a decrease of about 3.3% as compared to 20,190 fatalities in the first half of […]
Automated vehicles have the potential to improve safety and mobility. At lower levels of automation (Level 2), drivers are required to supervise the automation and be prepared to intervene as needed to maintain safety. The consequences of these technologies on driver behavior are not yet fully understood, especially as real-world testing has been less common […]
In 2021, the Federal Transit Administration (FTA) awarded the Rock Island County Metropolitan Mass Transit District (MetroLINK) a grant to develop a cybersecurity assessment tool to assess its cyber posture as part of FTA’s Public Transportation COVID-19 Research Demonstration Grant Program. The Cybersecurity Assessment Tool for Transit (CATT) and supporting documents were developed to assist […]
The Federal Motor Carrier Safety Administration (FMCSA), within the Department of Transportation, maintains complaint data submitted against large commercial truck, moving, and bus companies—which are types of motor carriers. GAO found that FMCSA makes some but not all of this complaint data available to the public, which is not consistent with Department of Transportation policy. […]
Wrong-way driving (WWD) crashes cause hundreds of fatalities and thousands of injuries annually in the United States. Although WWD crashes have been a concern since the advent of access-controlled divided roadways, the problem persists despite efforts to address it over time. NCHRP Research Report 1050: Wrong-Way Driving Solutions Handbook, from TRB’s National Cooperative Highway Research […]
In response to the rising concerns about intersection safety across the United States, traffic administrators have developed various techniques to create more effective and targeted improvement projects. Among them, Knowledge-Based Expert Systems (KBESs) demonstrate the unique advantage of having low requirements for users’ experience and efficient decision-making. This study proposes an enhanced KBES to assist […]
Previous studies have shown that the optimal speed trajectories for vehicles with different engine types (e.g., gasoline versus electric vehicles) are very different under certain conditions. This study aims to solve this issue by developing a general speed control algorithm that calculates a compromised solution across different vehicle engine types while optimizing the entire mixed […]
Emerging vehicle technologies have the potential to make driving not only more comfortable but also safer. Many motor vehicle crashes result from mistakes made by drivers. Advanced driver assistance systems (ADAS), common in today’s new vehicles, have the ability to warn the driver or even intervene automatically in many situations to help the driver avoid […]
Transportation data sharing partnerships are becoming increasingly important as transportation systems continue to evolve and become more complex. As the demand for transportation services grows, the need for accurate and timely data becomes paramount for staff and the public to make informed decisions. This report is a culmination of research and analysis conducted by the […]
This project started with a broad question: What can new, rich naturalistic driver data such as in the Second Strategic Highway Research Program’s Naturalistic Driving Study (SHRP2-NDS), tell us about how drivers react to roadway designs and access management techniques? To address this question, the project team reviewed and analyzed 6,209 trips that drivers in […]