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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 […]
Dial-a-ride and fixed-route transit options are some of the ways that microtransit services have traditionally been implemented in rural areas. App-based booking and dynamic routing are among the newer offerings transit agencies are exploring to provide greater flexibility and more spontaneous options for users. TCRP Synthesis 178: Microtransit Solutions in Rural Communities: On-Demand Alternatives to […]
The Department of Transportation’s Federal Highway Administration (FHWA) provides funding for states to improve safety at public crossings through the Railway-Highway Crossings Program (RHCP). GAO found that states used RHCP funding to address safety risks. For example, states added or upgraded existing equipment at crossings—such as bells, lights, and gates—from 2019 through 2023. During the […]
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 study explored the feasibility and acceptability of using stay in-place fiberglass reinforced plastic (FRP) jackets and underwater steel reinforced grout for timely bridge piling repairs in Minnesota without dewatering. One of the goals of the project was to determine the current state of practice to this corrosion repair and inspection by researching other projects […]
Artificial intelligence (AI) has revolutionized various areas in departments of transportation (DOTs), such as traffic management and optimization. Through predictive analytics and real-time data processing, AI systems show promise in alleviating congestion, reducing travel times, and enhancing overall safety by alerting drivers to potential hazards. AI-driven simulations are also used for testing and improving transportation […]
Roundabout implementation in the United States has increased in the last decade, and practitioners have learned lessons in successfully applying roundabouts in various land use and transportation environments and contexts. The TRB National Cooperative Highway Research Program’s NCHRP Research Report 1043: Guide for Roundabouts provides information and guidance on all aspects of roundabouts. Read the full guide […]
Hazard perception (HP) is one of the few driving skills proven to reduce traffic accidents through training and testing. The driver licensing process in some countries includes assessing individuals through videos demonstrating hazards and measuring their reactions. Testing HP using a driving simulator has been shown to better approximate real-world driving and, therefore, be more […]