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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 […]
EPA and the U.S. Department of Energy (DOE) have helped fund nondiesel school buses through four programs—three in EPA and one in DOE. EPA’s programs provide grants, rebates, or loans to help pay for less polluting school buses, such as those fueled by propane or electricity. DOE’s program has offered grants for energy improvements, including […]
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 […]
For this fact sheet, urban boundaries are determined by the State highway departments and approved by the Federal Highway Administration (FHWA), and the areas outside those boundaries are described as rural. The State highway departments use the boundaries decided by the Census Bureau.1 This fact sheet describes rural or urban classification of the trafficway segment […]
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 […]
NCHRP Web-Only Document 428: Quality Management for Digital Model–Based Project Development and Delivery, from TRB’s National Cooperative Highway Research Program, addresses two key challenges for state departments of transportation and other highway agencies: the use of 3D models as a new way to review construction designs and the review of the 3D models themselves. Quality […]
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 […]
The availability of large-scale, high-resolution, and consistently collected road data will improve the safety of all road users. The use of artificial intelligence (AI), machine learning (ML), and big data is key in providing the information needed to power data-driven, public, and proprietary safety analysis tools, as well as predictive and other systemic safety tools. […]
This report explores drivers’ experiences of aggressive driving and road rage conveyed in focus group discussions and provides data on the prevalence of self-reported aggressive driving and road rage behaviors based on a survey of a representative sample of U.S. drivers. Aggressive Driving and Road Rage