Social Transportation Analytic Toolbox (STAT) for Transit Networks
Jul 31, 2019

 

OVERVIEW

This webinar will present an open-source socio-transportation analytic toolbox (STAT) for public transit system planning. This webinar will consist of a demonstration of the STAT toolbox, for the primary purpose of getting feedback from transit agencies on the tool's usefulness. We are especially interested in hearing about any improvements that would aid transit agencies in implementing it.

The STAT toolbox was created in an effort to integrate social media and general transit feed specification (GTFS) data for transit agencies, to aid in evaluating and enhancing the performance of public transit systems. The toolbox enables the integration, analysis, and visualization of two major new open transportation data sources—social media and GTFS data—to support transit decision making. In this webinar, we will introduce how we leveraged machine learning and natural language processing techniques to retrieve Twitter data related to public transit systems and to extract sentence structures to geomap those tweets to their corresponding transit lines/stations. Combined with transit accessibility measures computed using GTFS, STAT is able to identify the mismatch between the services that the...

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A screenshot from the STAT tool shows a map with embedded Tweets by location
Jul 10, 2019
Xiaoyue (Cathy) Liu, University of Utah; Ran Wei, University of California, Riverside; Aaron Golub and Liming Wang, Portland State University

With today's profusion of open data sources and real-time feeds, transit agencies have an unparalleled opportunity to leverage large amounts of data to improve transit service. Thanks to NITC researchers,...

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An aerial view of a multifamily housing complex next to a road
Jul 10, 2019
Photo by cegli
Kelly Clifton, Portland State University

Many cities are reconsidering their reliance on ITE's Trip Generation Manual, now in its 10th edition. 

Kelly Clifton, TREC researcher and associate dean for research of Portland State University's Maseeh College of Engineering & Computer Science, is one of the people leading the charge to identify better, more nuanced ways to anticipate transportation demand; especially person (non-car) trips. In an extended series of TREC projects,...

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People on e-scooters
Jul 10, 2019

The National Institute for Transportation & Communities (NITC) research consortium, led by Portland State University, has awarded $1.035 million in total funding for ten research projects spanning five universities. This year we focused funding on micromobility, traffic, meeting the transportation needs of underserved populations and people with disabilities, and the intersection of transportation and housing.

Led by Reid Ewing of the University of Utah, Nicole Iroz-Elardo and Arlie Adkins of the University of Arizona
 
Led by Yao-Jan Wu of the University of Arizona, Xianfeng Yang of the University of Utah and Sirisha Kothuri of Portland State University
This multi-university collaboration builds upon previous research led by Yao-Jan Wu in multi-modal traffic monitoring, as well as...
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Pedestrians cross near a light rail amid mixed-use development
Mar 05, 2019

The National Institute for Transportation and Communities (NITC) program has released its 2019 general research request for proposals. Faculty at NITC's partner universities* are invited to submit abstracts by March 29, 2019.


Through funding provided by the U.S. DOT, we will award up to $1,000,000 to research projects that support NITC’s theme: improving mobility of people and goods to build strong communities. Our theme includes a few key topics:

  • Increasing access to opportunities
  • Improving multi-modal planning and shared use of infrastructure
  • Advancing innovation and smart cities
  • Developing data, models, and tools

2019 RESEARCH PRIORITIES

The NITC Advisory Board has provided input into several research priorities that relate to multimodal transportation data and the transportation-land use-housing connection. NITC is prioritizing the funding of proposals that directly addresses research questions related to:

Developing Data, Models and Tools. Agencies are confronting a plethora of new mobility options along with new data sources to support transportation research, planning, and analysis. Several priority research areas have been identified to increase understanding: 

  • Collection of multimodal...
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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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People talking and looking at materials in a workshop
Sep 20, 2018

We held our annual flagship professional development event, Transportation & Communities, on September 13 and 14. In honor of the event's ten-year anniversary, we changed up the format: Rather than a typical conference with one-hour sessions and a keynote gathering, we offered a selection of intensive half-day workshops. See photos from the event.

The workshops gave practitioners a chance to take a deep dive into new skills in order to walk away with new tools or frameworks that could be applied to their work. We offered a review of congestion mitigation strategies, universal access and equity in pedestrian planning, and discussion on how smart technology could be implemented in suburban communities. Several workshops were based on findings from new research by the National Institute for Transportation & Communities (NITC), the six-university consortium which sponsored the event. The NITC...

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Left: Bicycles on a trail; Right: Young woman buying transit pass
Aug 23, 2018

The National Institute for Transportation and Communities (NITC) is soliciting proposals for our two 2018 Pooled Fund projects:

RFP now open; proposals due Oct 1, 2018

This project will address the need of cities and municipalities to combine bicycle data from different sources (such as manual counts, automatic counts, and crowd-sourced data from apps such as Strava) to assess an accurate accounting of bicycle traffic on a network. Current work on data fusion techniques is limited and additional research is needed to fully understand the choice of weighting techniques, inclusion of spatial vs. temporal variation in the weighting scheme and exploring other...

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Stock image of bicycles
Jul 18, 2018

The National Institute for Transportation and Communities (NITC) program has released its 2018 Small Starts request for proposals (RFP). Faculty at NITC's partner universities* are invited to submit abstracts by September 17, 2018.

The Small Starts grant assists researchers (based at NITC partner universities) who are interested in transportation but have not had an opportunity to undertake a small project ($20,000 or less). Read about the Small Starts projects that were funded in 2017. Projects must be consistent with NITC's theme of improving the mobility of people and goods to build strong communities.

Our theme includes a few key topics:

  • Increasing access to opportunities
  • Improving multi-modal planning and shared use of infrastructure
  • Advancing innovation and smart cities
  • Developing data, models, and tools

Key Dates

  • RFP Opens: July 18, 2018
  • Proposals due: September 17, 2018
  • Award Selection: Sept-Oct 2018
  • Projects begin & funds become available: December...
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Image of a street with cars
Jun 20, 2018

The National Institute for Transportation & Communities (NITC) research consortium, led by Portland State University, has awarded $926,000 in total funding for eleven research projects spanning five universities.

The General Research grant is NITC's flagship grant. Annually, we fund general research through a competitive, peer-reviewed RFP process for projects ($30,000 - $150,000) consistent with our theme of improving the mobility of people and goods to build strong communities.

Four of these new projects involve multi-university collaboration, and seven are advancing the transportation knowledge base by building upon an existing body of research. The new group of projects will help lead the deployment of innovative new technologies and practices to improve the safety and performance of transportation systems:

Led by Liming Wang of Portland State University with co-investigator Yao-Jan Wu of the University of Arizona
This multi-university collaboration expands upon previous research by Liming Wang, Incorporate Emerging...
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