343 Results
Advancing Safety At Intersections: Measuring The Effectiveness Of Traffic Signal Strategies For Speed Management On Operations And Safety
Sirisha Kothuri
Many states are adopting the Safe System approach (USDOT, 2022) to improve traffic safety. As the role of speed in injury severity is becoming increasingly clear, one of the key elements of a Safe System approach is Safer Speeds. Specifically, higher ...
Read More
Subcontract: NCHRP 17-115 Guide for Marked Crosswalk Design, Spacing, Placement, and Safety
Sirisha Kothuri
Nathan McNeil
In a project funded by the National Cooperative Highway Research Program (NCHRP), Portland State University is partnering with the University of North Carolina at Chapel Hill and Safe Streets to develop guidance to help agencies identify the appropri ...
Read More
Mode-Based Benefit-Cost Analysis Calculator
Jenny Liu
Transportation decision-makers typically use benefit-cost analysis (BCA) to evaluate the tradeoffs of transportation projects. However, it is difficult to produce state-specific measures that are multimodal and can consistently evaluate the full rang ...
Read More
Automated Detection, Tracking, and Safety Analysis of Pedestrians and Cyclists Using YOLOv9
Banafsheh Rekabdar
Sirisha Kothuri , Nathan McNeil
This applied research project aims to adapt and further train YOLOv9 to enhance its ability to accurately detect, track, and count cyclists and pedestrians in video data from the Portland Metro Area. The method will also extract surrogate safety metr ...
Read More
Improving Accuracy and Precision of Pedestrian Volume Estimates Using Advanced Machine Learning Approaches
Sirisha Kothuri
Banafsheh Rekabdar
Counts provide the foundation for measuring nonmotorized travel along a link or a network and are also useful for monitoring trends, planning new infrastructure, and for conducting safety, health, and economic analyses. Most agencies still use manual ...
Read More
PeopleforBikes- Living Lab Evaluation
John MacArthur
Researchers will conduct an evaluation of the Better Bike Share Partnership (BBSP) Living Lab. BBSP provided five organizations in Detroit, Chicago, Cincinnati, Portland and Philadelphia with funding, support and resources to develop best practices a ...
Read More
State DOT and Tribal Use of Active Transportation Data: Practices, Sources, Needs, and Gaps (NCHRP 07-31)
Jennifer Dill
Nathan McNeil , Sirisha Kothuri
This project is led by the Transportation Research and Education Center (TREC) at Portland State University (PSU), in collaboration with the Institute for Tribal Government (ITG) at PSU, Toole Design Group, the Highway Safety Research Center at Unive ...
Read More
NCHRP 08-164: Institutional Integration of Active Transportation
Jennifer Dill
John MacArthur , Nathan McNeil
The need for improving active transportation safety and mobility is clear, as the share of all road user deaths that are pedestrians or cyclists has risen nationally. The US Department of Transportation (US DOT), along with state DOTs across the nati ...
Read More
Applying the Safe System Approach in Decision-Making
Sirisha Kothuri
Jason Anderson
Current fatality and serious injury trends continue to rise steeply for all road users, particularly vulnerable users, in both Washington State specifically and across the United States more broadly. While the United States Department of Transportati ...
Read More
Exploring Bike Bus Programs in the United States
John MacArthur
Nathan McNeil
Photo by Jonathan Maus, BikePortland
This research report, authored by Evan Howington, John MacArthur, and Nathan McNeil of PSU's Transportation Research and Education Center (TREC), concludes that bike buses have the potential to leverage the las ...
Read More
A Research Roadmap for Institutionalizing Transportation Equity (NCHRP 20-123(19))
Aaron Golub
Nathan McNeil
The American Association of State Highway Transportation (AASHTO) Strategic Plan includes a goal of promoting diversity in all AASHTO activities, collaborating with traditional and nontraditional partners to support equity and social justice objectiv ...
Read More
Mobility and Accessibility Resilience of Transportation Infrastructures
David Yang
The objective is to address practical challenges related to mobility and accessibility following natural disasters. The anticipated outcome of this project will be to provide actionable insights and solutions that can be implemented in real-world tra ...
Read More
Page 1 of 29
Next ›