Friday Transportation Seminars at Portland State University have been a tradition since 2000. You can join us online or in-person at 11:30 AM. All presentations are recorded and shared on the event page afterwards.
In 2015, the Portland City Council unanimously passed a resolution committing Portland to Vision Zero, the goal to eliminate traffic deaths and serious injuries. An underpinning of Vision Zero is that streets are managed for safe speeds. This presentation will summarize Portland's speed management process, how it relates to achieving Vision Zero, and present two case studies in which speed limits were reduced: (1) a 25 mi/h to 20 mi/h reduction on residential streets and (2) various reductions on arterials and collectors. Reduction sites in which additional treatments were implemented, such as speed humps and fixed speed safety cameras, will also be discussed. Results of the data analysis will be shared, along with next steps in Portland's speed management process.
KEY LEARNING OUTCOMES
- Knowledge of Portland's Speed Management process and how it impacts safety;
- The effects of speed limit reductions on observed vehicle speeds for different roadway classifications;
- The effects of speed limit reductions in conjunction with other treatments on observed vehicle speeds;
- Application of statistical models to determine effects of treatment
Jason Anderson, Research Associate & Adjunct Instructor, Portland State University
Clay Veka, Vision Zero Coordinator, Portland Bureau of Transportation
This 60-minute seminar is eligible for 1 hour of professional development credit for AICP (see our provider summary). We can provide an electronic attendance certificate for other types of certification maintenance.
Portland State University's Transportation Research and Education Center (TREC) is home to the U.S. DOT funded National Institute for Transportation and Communities (NITC), the Initiative for Bicycle and Pedestrian Innovation (IBPI), PORTAL, BikePed Portal and other transportation grants and programs. We produce impactful research and tools for transportation decision makers, expand the diversity and capacity of the workforce, and engage students and professionals through education and participation in research.