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This study examined the effects of posted speed limit changes on traffic safety by conducting before-and-after assessments using crash and speed data from multiple sites. Despite numerous studies reporting the negative impacts of increased speeds on traffic safety, many states have raised their posted speed limits. In response, the AAA Foundation for Traffic Safety (AAA […]
Each year, the Governors Highway Safety Association (GHSA) provides a first look at national and state-level pedestrian fatality data and trends through a Spotlight on Highway Safety report, typically published in late spring or early summer. This year’s report is divided into three sections. It presents pedestrian fatality projections for all of 2022 based on […]
The number and rate of traffic fatalities in the U.S. surged starting in 2020, even as the rate of vehicle travel plunged while the nation grappled with the impact of the COVID-19 pandemic. This trend of increasing traffic fatalities continued in 2021, as vehicle travel returned to near pre-pandemic levels. From 2021 to 2022 the […]
This report provides a primer on location-based service (LBS) data and its uses in public transportation. It defines LBS data, describes the techniques for collecting and processing the data, and the key parties involved. The report highlights opportunities, limitations, and potential risks of using LBS data, based on the literature and interviews with transit agencies, […]
Several pieces of legislation have expanded DOT’s authority to combat human trafficking. These include expanding grant programs, requiring air carriers to train certain personnel, tracking air carrier training and tips, establishing the multimodal advisory committee, preparing a triennial advisory committee recommendations and best practices report, instituting a lifetime ban on Commercial Driver’s License holders who […]
The most basic truth about transportation too often goes unsaid: arriving safely is what matters most. We know this to be true, yet in our most familiar and common form of transportation – the use of roads by vehicles, pedestrians, and cyclists – tens of thousands of lives are lost every year in America. One […]
Pull up to a fast-charging station with a low charge and it’ll be 20-60 minutes until you’re back on the road with a nearly full battery. Plug in at home on a lower-voltage connection and you’re looking at a charging time of multiple hours. Electric-vehicle startup Fisker has an ingenious solution to ease that pain. Rather […]
Advanced Driver Assistance Systems (ADAS) support drivers with some driving tasks. However, drivers may lack appropriate knowledge about ADAS (referred to as their mental model), which can translate to drivers misusing or mistrusting the technologies, especially in situations beyond the capability of the system (i.e., edge cases). Past research suggests that mental models may be […]
A proposal led by The University of Alabama (UA) to strengthen the Deep South’s role in production and support of electric vehicles (EVs) was selected by the National Science Foundation (NSF) for further development. As automakers bring more EVs into production, add more computational power and continue to integrate automation, the entire transportation ecosystem must change to meet new […]
Traffic agencies are seeking solutions to the rise in pedestrian fatalities. A traffic control treatment that is gaining use is the pedestrian- or school-crossing warning sign with light-emitting diodes (LEDs) embedded in the borders (called LED-Em in this report). View the full study here.