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Cars, trucks, and other vehicles can emit air pollutants harmful to human health. CMAQ supports projects in areas that do not currently, or did not in the past, meet federal air quality standards for certain air pollutants—carbon monoxide, ozone, or particulate matter. The Infrastructure Investment and Jobs Act provided about $2.7 billion for CMAQ in […]
Roadway fatalities and serious injuries are a significant public health concern in rural and tribal settings. Creating a coalition of interested individuals is part of the Safe System Approach that addresses the high rates of these fatalities and serious injuries. BTSCRP Research Report 8: Highway Safety Behavioral Strategies for Rural and Tribal Areas: A Guide, […]
This fact sheet discusses occupant protection including seat belts, car seats for children under 5 years old, and frontal air bags in passenger vehicles. These are passenger cars and light trucks (pickups, SUVs, and vans) with gross vehicle weight ratings of 10,000 lb or less. Vehicle occupants are drivers and passengers. Read the fact sheet […]
Planning and operating transportation systems involves the exchange of large volumes of data that must be shared between partnering transportation agencies, private-sector interests, travelers, and intelligent devices such as traffic signals, ramp meters, and connected vehicles. NCHRP Research Report 1121: Data Integration, Sharing, and Management for Transportation Planning and Traffic Operations, from TRB’s National Cooperative […]
The National Highway Traffic Safety Administration recently issued a projection report of traffic fatalities and the fatality rate per 100 million vehicle miles traveled (VMT) for 2024 (Early Estimate of Motor Vehicle Traffic Fatalities in 2024, Report No. DOT HS 813 710). That report shows an estimated 39,345 people died in motor vehicle traffic crashes […]
Examining the behavior of drivers to encourage safe operation of vehicles is one of the core research areas at the AAA Foundation for Traffic Safety. This technical report presents research findings on one such driver behavior, distracted driving, because it remains a significant traffic safety concern. Technology-based countermeasures such as smartphone blocking features can effectively […]
State departments of transportation (DOTs) undertake numerous bridge replacements annually. Specific replacements present unique challenges among these projects due to location restrictions, mobility implications, design characteristics, and environmental constraints. NCHRP Synthesis 645: Construction Strategies and Techniques for Planned Bridge Replacements in Complex Scenarios, from TRB’s National Cooperative Highway Research Program, documents practices and decision-making used […]
Public agencies nationwide are benefiting from ever-evolving advancements in traffic management operations, specifically through intelligent transportation systems (ITS). These transportation and traffic management systems use cutting-edge information and communication technologies to improve safety, efficiency and sustainability of their networks, thereby improving safety, reducing traffic congestion and enhancing driver experiences. Transportation leaders interested in implementing or […]
Technologies that partially automate some aspects of driving are becoming increasingly common in vehicles. These technologies have the potential to make driving more comfortable and possibly safer. However, it is important for drivers to understand the capabilities as well as the limitations of these technologies in order to use them safely. Previous research has shown […]
This fact sheet contains information on fatal motor vehicle traffic crashes based on data from the Fatality Analysis Reporting System (FARS) and non-fatal motor vehicle traffic crashes from the National Automotive Sampling System (NASS) General Estimates System (GES) and Crash Report Sampling System (CRSS). Results from FARS, such as fatal crashes and fatalities, are actual […]