Webinar: Collecting and Analyzing Pedestrian Behaviors at Intersections Using LiDAR Tracking Technologies

Thursday, May 18, 2023, 11:00am to 12:00pm PDT
Taylor Li, University of Texas at Arlington; Sirisha Kothuri, Portland State University
PDH: 1 | AICP: 1



The aim of this research is to investigate pedestrian behavior at signalized intersections using state-of-the-art LIDAR sensing technologies and to use this data, along with vehicular data, to develop a more effective multimodal signal control system.

In the presentation, the presenters will describe a novel method of collecting pedestrian crossing behaviors at signalized intersection, discuss the findings and implications of data analytics, and introduce a novel approach to dynamic flashing yellow arrow mechanisms to reduce the conflict between left turn vehicles and crossing pedestrians.


  • Understand the framework of LiDAR sensing solutions;
  • Understand how to collect pedestrian behaviors at intersections;
  • Understand how to provide new protection for crossing pedestrians with object-tracking technologies.


This webinar is based on a study funded by the National Institute for Transportation and Communities (NITC) and conducted at the University of Texas at Arlington, Portland State University, and the University of Utah. Read more about the research: Pedestrian Behavior Study to Advance Pedestrian Safety in Smart Transportation Systems Using Innovative LIDAR Sensors.


Pengfei (Taylor) Li, University of Texas Arlington

Dr. Pengfei (Taylor) Li is an assistant professor of Transportation Engineering at the University of Texas at Arlington. He has over 20 years of experiences. Before he was appointed as a professor, he was a traffic engineer, ITS engineer and project manager at various companies and research institutes. His research and professional practices focus on intelligent transportation systems (ITS), smart sensor development, AI and big data analytics. He has built and delivered arterial management solutions and smart sensors for multiple agencies. Dr. Li is active in both research and engineering communities. He led the effort with many professional volunteers in delivering a practitioner-oriented “traffic signal simulation cookbook”, which has been downloaded over 8,500 times. His research has resulted in 70 peer-reviewed and referred papers and one patent. Dr. Li is a professional engineer registered in Alberta, Canada.


Sirisha Kothuri, Portland State University 

Sirisha Kothuri, Ph.D. is a senior research associate in the Department of Civil and Environmental Engineering at Portland State University. Dr. Kothuri’s primary research interests are in the areas of multimodal traffic operations, bicycle and pedestrian counting, and safety. Dr. Kothuri is the research co-chair of the Transportation Research Board’s Pedestrians Committee (ANF10) and the Bicycle and Pedestrian Data Subcommittee (ABJ 35(3)) and a member of Traffic Signal Systems committee. Dr. Kothuri received her BCE from Osmania University, India, MSCE from Louisiana State University, Baton Rouge and Ph.D. from Portland State University.




This 60-minute webinar is eligible for 1 hour of professional development credit for AICP (see our provider summary). We provide an electronic attendance certificate for other types of certification maintenance.


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This webinar is hosted by the Transportation Research and Education Center (TREC) at Portland State University. The research was funded by the Summit Foundation and the National Institute for Transportation and Communities (NITC), a program of TREC and one of seven U.S. Department of Transportation national university transportation centers. The NITC program is a Portland State-led partnership with the University of Oregon, Oregon Institute of Technology, University of Utah and new partners University of Arizona and University of Texas at Arlington. We pursue our theme — improving mobility of people and goods to build strong communities — through research, education and technology transfer.