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The persistence of alcohol-involved crashes is a significant and persistent challenge to traffic safety that requires new strategies to combat the annual loss of life. This study examined the extent to which a modern vision-based driver monitoring system (DMS) could be used to detect driver-based measures of alcohol impairment. Measures of eye behavior and driving […]
Highway infrastructure construction projects often necessitate temporary traffic pattern changes, such as lane or road closures, which can impact mobility, safety, and the environment. This report presents a systematic framework and tool designed to assist transportation agencies in evaluating and comparing alternative construction plans. The framework integrates cost analysis to quantify the traffic effects of […]
Behavioral outreach is a compelling option for improving traffic safety, because it presents a relatively low-cost and broad-based way for highway safety offices to discourage unsafe behaviors and encourage safe behaviors without requiring the same logistics and resources as deploying enforcement or changing infrastructure. Measures of Effective Traffic Safety Public Awareness
Pedestrian fatalities in the U.S. have increased dramatically since 2010, with most of the rise occurring in dark conditions. NCHRP Web-Only Document 430: Improving Pedestrian Safety at Night, from TRB’s National Cooperative Highway Research Program, is supplemental to NCHRP Research Report 1157: Strategies to Improve Pedestrian Safety at Night: A Guide and summarizes the research from previous […]
The Alabama Department of Economic and Community Affairs (ADECA) has announced the approval of its new state plan for the National Electric Vehicle Infrastructure (NEVI) Fund by the Federal Highway Administration. The plan, approved on September 9, 2025, outlines the state’s strategy to receive $79,308,285 over the next five years through the federal NEVI formula […]
The 2025 Safe Mobility Conference was held in Madison, Wisconsin, from April 7 to April 9, in partnership with the University of Wisconsin–Madison. The event brought together a diverse group of transportation stakeholders, including industry experts, academic researchers, and practitioners from governmental agencies, with the goal of fostering collaboration and building partnerships. The conference proceedings […]
U.S. traffic fatalities fell in 2024 for the third straight year, four years after traffic fatalities surged in 2020 and 2021 as the nation grappled with the impact of the COVID-19 pandemic. However, despite the modest decrease in traffic fatalities over the past three years, traffic fatalities in 2024 remained significantly higher than a decade […]
Manufacturers and hardware suppliers use significant time and resources to provide guardrail materials according to one state agency’s design and material standards, only to start the process all over again to satisfy another state’s specifications. Such inconsistency often leads to increased fabrication costs for hardware suppliers that are ultimately passed along to transportation agencies. Investigation […]
The U.S. scientific enterprise has produced countless discoveries that have led to significant advances in technology, health, security, safety, and economic prosperity. However, concern exists that excessive, uncoordinated, and duplicative policies and regulations surrounding research are hampering progress and jeopardizing American scientific competitiveness. Estimates suggest the typical U.S. academic researcher spends more than 40 percent […]
Lagging indicators in occupational safety and health are required reporting figures that provide an industry-standard metric to measure the number of employees injured annually or impacted by a recordable injury. Recognizing the weaknesses of traditional lagging indicators to proactively manage occupational safety, many organizations and industries have emphasized safety leading indicators; that is, metrics to […]