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Upper Great Plains Transportation Institute’s Advanced Traffic Analysis Center (ATAC), with support from the North Dakota Department of Transportation (NDDOT) had previously completed a pilot traffic data collection project for two of the state highway intersections located within the City of Minot...
Early research suggested protected left-turn signalization had clear safety benefits over permissive left-turn signalization. Yet, subsequent research on when and where to use protected left-turn signalization focused more on vehicle delay and throughput than on safety. Based on such studies, it would...
This report summarizes Phase II of an ongoing regional effort to expand traffic data collection by leveraging existing transportation infrastructure rather than requiring new data collection equipment. Building on a 2019 pilot project, Phase II, initiated in early 2023, continued the collaboration among...
Reliable intersection-traffic data are essential for transportation planning, operations, and safety. The City of Bismarck relies on targeted short counts, which is the predominant, albeit outdated, type of intersection traffic data collection. The city recently updated its signalized intersection equipment...
The Upper Great Plains Transportation Institute (UGPTI) has built a web-based traffic data analysis tool. This Traffic Analysis Tool uses existing traffic signal control devices to collect data 24 hours per day, 7 days per week, and 365 days per year. The primary purpose of this project was to develop...
Recent reconstruction of the Grand Forks transportation network included upgrades of some of the older models of cameras. The MPO intended to: 1) continue utilizing the reconstructed intersections for traffic data collection; 2) utilize available API commands to download traffic data; and 3) minimize...
This study evaluated the approach-level safety performance of left-turn phases at signalized intersections, including permissive, protected-permissive (PPLT), protected indications, and flashing yellow arrow (FYA). Data collection included exact dates of traffic signal changes, high-resolution datasets...
The goal of this study is to evaluate light rail priority strategies along the 400 S / 500 S corridor in Salt Lake County through analyzing benefits and impacts of the priority on transit and vehicular traffic through microsimulation. The results show that the existing priority strategies have no impacts...
With ever-increasing traffic demand and price of fossil fuels public transit becomes more popular transportation mode than ever before, especially in the fast growing regions such as Salt Lake City Metropolitan Region. Wasatch Front Regional Council (WFRC) (a local Metropolitan Planning Organization)...
In 2005, the Utah Department of Transportation (UDOT) installed the Sydney Coordinated Adaptive Traffic System (SCATS) in Park City, Utah, on its network of 14 signalized intersections. A field evaluation compared previous time-of-day actuated-coordinated signal timings with those dynamically computed...