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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 […]
Travelers who are blind or visually impaired use a variety of cues and strategies to orient themselves within their surroundings and move through space to where they want to go. This wayfinding process can be particularly challenging in complex urban environments where some cues, such as detectable edge treatments, the sound of surging parallel traffic, […]
Cannabis is the most widely used psychotropic substance surpassing alcohol use in 2022 in the United States. As with other impairing substances, evidence suggests that driving under the influence of cannabis is also associated with an increased risk of crashes, injuries, and fatalities. There is a paucity of evidence on strategies to impact driving after […]
With the recent liberalization of cannabis control laws, increasingly larger numbers of drivers are testing positive for cannabis. Research suggests many cannabis users believe driving under the influence of the drug is relatively safe. The purpose of this multiphase project was to understand cannabis users’ thoughts, perceptions, and reasons for driving under the influence of […]
The number of pedestrians killed on U.S. roads and streets has increased by more than 80% since reaching its modern-era record low in 2009. While the contributions of factors such as vehicle size and driver behavior have been the subject of extensive research, two additional factors also stand out: time of day and location. Virtually […]
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 […]
As separated on-street bicycle lanes become increasingly common, many state departments of transportation (DOTs) and local agencies have installed them to address safety concerns and promote cycling. Research was needed to provide state DOTs with detailed information on the anticipated safety benefits of bicycle network design features across various contexts, the relationship between these features, […]
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 […]
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 […]