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Regular assessment of pavement condition is critical for safe and functional roadways, yet traditional inspections are subjective, labor-intensive, and difficult to scale. Recent AI-based approaches have automated distress detection, but they produce only numerical outputs without the plain-language...
This advisory manual supplements the Native American Pedestrian Safety Assessment Guidelines and is designed for use by Tribal agencies, assessors, and related multidisciplinary teams. This manual provides direction on how to interpret and apply the guidelines and helps identify documentation and evidence...
Active transport modes, especially walking and biking, play a significant role in many Native American communities due to traditional practices, lower vehicle ownership rates, healthy lifestyles goals and established travel patterns. Therefore, prioritizing pedestrian safety in high-traffic areas can...
A community is considered walkable when its transportation network enables pedestrians and other vulnerable road users to travel safely, comfortably, and efficiently to and from key destinations, including residential areas, workplaces, schools, healthcare facilities, commercial centers, parks, and community...
To implement strategic, technical, and programmatic measures aimed at achieving zero traffic fatalities in Native American communities through the integration of pedestrian-related projects and pertinent safety assessment frameworks. This document outlines a comprehensive framework, including infrastructure...
Winter road maintenance often relies on salts to melt snow and ice, but repeated salt use can damage concrete infrastructure and increase long-term maintenance needs. This project examined whether fly ash-based geopolymer mortar containing graphene nanoplatelets could be developed as a lower-cement...
The United States trails other developed countries in several transportation safety metrics. Progress has been made in reducing the number of traffic-related fatalities, but preventable crashes resulting in death, injury, and property damage continue to occur. The statewide driver survey provides baseline...
Reliable knowledge of subsurface soil properties is needed to predict earthquake motions and assess seismic hazards. However, these properties are often uncertain because site investigations provide only limited measurements. Conventional seismic inversion methods can estimate soil properties from recorded...
Trucks are an important mode of economic connectivity in rural states like North Dakota. The size/mass difference between 80,000-pound trucks and 4,000-pound passenger vehicles, along with operational differences such as acceleration/deceleration times and turning radiuses, heighten risk for crash events....
This report explores trends in transportation maintenance requests submitted through municipal 311 systems across six U.S. cities: Denver, San Francisco, Charlotte, Nashville, Boston, and Washington, D.C. The 311 system is a non-emergency citizen relationship management component used by many cities...