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GHSA’s analysis of preliminary data provided by State Highway Safety Offices (SHSOs) found that while pedestrian deaths during the first six months of 2024 fell slightly from the year before, they are 12% higher than 2019 and up a shocking 48% since 2014. Over the last decade, deaths of people on foot have risen at a pace […]
Transportation is fundamental to the vibrancy of the Nation and facilitates economic prosperity and quality of life. It enables people to engage in productive pursuits and experience the social interactions that take full advantage of geographic specialization and diffusion. An efficient and resilient transportation system and its seamless operation underpin the overall efficiency and resilience […]
Development of the AASHTO Highway Safety Manual began from a TRB conference session and a workshop, both held in 1999, that identified the need for a traffic safety document analogous to the role of the Highway Capacity Manual for traffic operations. NCHRP Research Report 1140: Quantitative Safety Analyses for Highway Applications, from TRB’s National Cooperative Highway Research Program, describes […]
Transportation is fundamental to the vibrancy of the Nation and facilitates economic prosperity and quality of life. It enables people to engage in productive pursuits and experience the social interactions that take full advantage of geographic specialization and diffusion. An efficient and resilient transportation system and its seamless operation underpin the overall efficiency and resilience […]
The Alabama Crash Facts Book (CFB) is an annual publication produced in part by CAPS that provides a wide breadth of traffic safety statistics for a variety of constituencies. While most of the users of the CFB are traffic safety personnel, this publication is also intended to serve as a public information conduit. Read the […]
Transportation is fundamental to the vibrancy of the Nation and facilitates economic prosperity and quality of life. It enables people to engage in productive pursuits and experience the social interactions that take full advantage of geographic specialization and diffusion. An efficient and resilient transportation system and its seamless operation underpin the overall efficiency and resilience […]
Households spent an average of $13,174 on transportation in 2023—the second largest household expenditure category after housing when spending on behalf of households, such as healthcare benefits, is excluded. Transportation expenditures grew by the second largest amount (7.1 percent) but down from a 12.2 percent growth in 2022 and less than insurance and pensions which […]
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 […]
Artificial intelligence (AI) is an evolving and important tool, enabling technology to augment human tasks and perform tasks humans cannot or would not. In the field of transportation, automated vehicles (AVs) are perhaps the best-known application of AI. However, there are other examples of AI which can improve safety, operational performance, data collection and analytics, […]
Strength loss in high plasticity clay soils is a common occurrence along roadways in western and central Alabama and has considerable impact on pavement distress and slope failures. Approximately $16 million was spent to repair slope failures in western and central Alabama between 2005 and 2015 with many of these failures occurring in areas with […]