Webinar: Modeling Freeway Traffic in a Mixed Environment: Connected and Human-Driven Vehicles - Terry Yang
Nov 29, 2018

 

PRESENTATION ARCHIVE

Miss the webinar or want a look back?

OVERVIEW

Although connected vehicles (CVs) will soon go beyond testbeds, CVs and human-driven vehicles (HVs) will co-exist over a long period. Hence, it is critical to consider the interactions between these two types of vehicles in traffic flow modeling. In this study, we aim to develop a macroscopic model to understand how CVs would impact HVs in the traffic stream. Grounded on the second-order traffic flow model, we study the relationships among flow, density, and speed by two sets of formulations for the groups of CVs and HVs, respectively. A set of friction factors, which indicate CVs' impact to HVs, are introduced to the speed equation for accounting CV speed impacts. Then extended Kalman Filter is employed to update both model parameters and friction factors in real-time. By using CVs trajectory data as measurements, the difference between CV average speed and overall traffic mean speed will be fully accounted. The proposed model will serve as a basis for designing CV-based traffic...

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The Portland Streetcar
Aug 23, 2018
Principal Investigators: Kristin Tufte, Portland State University; Larry Head, University of Arizona
Project Overview: NITC Connected Vehicle Platform / Connected Streetcar Project (pending name change)

Learn more about this and other "Smart Cities" technology by registering for this September 14 workshop.

Connected Vehicle (CV) technology is coming to Portland, Oregon. We're excited to announce the first step in what could be a long-term game changer for the city: during the winter of 2018, researchers from Portland State University and University of Arizona will work with the City of Portland to deploy a test concept of CV tech on the Portland Streetcar.

Primarily funded by the National Institute for Transportation and Communities (NITC), the Connected Streetcar Project is one of the Portland Bureau of Transportation’s (PBOT) 2018 Smart Cities pilot projects, and also part of the city’s ...

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Feb 25, 2011

If you weren’t one of the 10,000 people who attended the Transportation Research Board’s Annual Meeting in January, there are fifty students and twenty faculty for PSU, UO, OSU and OIT who can tell you what they learned there.  OTREC's bright yellow lanyards made our presence especially visible! PSU student Brian Davis blogged about his experience, OTREC’s Jon Makler was interviewed in a local newspaper, and the Oregon “delegation” at the conference was covered by both local and national blogs. Team OTREC filed some daily debriefs, highlighting presentations on topics such as federal stimulus investments in Los Angeles and Vermont’s efforts to address their transportation workforce crisis with returning military veterans (as well as the...

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