It's 2019, and with the explosion of mobile technology that has affected all other areas of life, it would seem to be a golden age for people living with visual impairments. Like never before in history, blind, deaf-blind, and low-vision individuals can access a plethora of mobile apps offering a range of services to aid in navigation and wayfinding. But the words "explosion" and "plethora" hint at an underlying problem: there are so many different apps, each one addressing only a segment of their mobility...Read more
With worsening congestion, travel time reliability is increasingly becoming as critical as average travel times in affecting travel choices. Researchers from Portland State University (PSU) partnered with Washington County, Oregon to offer data-driven strategies in prioritizing funding for travel time reliability improvements on their urban arterials. The vast majority of existing research on travel time reliability has focused exclusively on freeways. Avinash Unnikrishnan, Sirisha Kothuri and Jason C. Anderson leveraged Bluetooth sensors provided and deployed by Bluemac Analytics to identify problem areas in the county. Set up at intersections throughout Washington County, the sensors are able to calculate travel time from one intersection to another by matching Bluetooth signals from devices in people's cars. The researchers evaluated the Bluetooth travel time data to understand the temporal variation in travel time reliability metrics on these urban arterials, including factors related to time of day, weather, and holidays. They also provided the County with an automated process to clean up their data and remove outliers.
The researchers determined that Tualatin-Sherwood Road has the lowest travel time reliability of the three corridors. Now that Tualatin-Sherwood Road has been identified as having the...Read more
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...Read more
- Download the Final Report (PDF)
- Download the Project Brief (PDF)
- Use the STAT Toolbox
- Join the DEMO WEBINAR: STAT will be demonstrated by its creators on Sept 4
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,...Read more
- Download the Final Report (PDF)
- Download the Executive Summary (PDF)
- See the big picture: Read about the ongoing work
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,...Read more
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.
Darshan Chauhan, Portland State University
Darshan Chauhan is a graduate research assistant in civil engineering at Portland State University. He currently serves as the treasurer of STEP (Students in Transportation Engineering and Planning), PSU's transportation student group, and generously volunteers his time at a variety of transportation-related events via PSU's Transportation Research and Education Center (TREC). He will defend his masters thesis on network flow problems this year, and plans to continue on to earn his PhD. In the 2018/2019 academic year, Darshan earned a Walter H. Kramer Fellowship from Portland State University.
Tell us about yourself?
I am a second-year Masters student in the civil engineering program with a transportation focus at PSU. I have been training with Prof. Unnikrishnan here to understand, model, and tackle uncertainties in different transportation networks. Before coming to Portland, I completed my Bachelor’s degree in civil engineering at BITS Pilani Hyderabad Campus, working as an undergraduate researcher in areas like fracture mechanics, optimization, and alternate cementitious materials through my junior and senior years. After completing my masters, I am continuing for my Ph.D. in transportation at PSU. Apart from school, I really enjoy...Read more
Our Transportation Undergraduate Research Fellowship (TURF) program is in its second year, and we're excited to introduce our 2019 cohort. The TURF program advances critical thinking and research skills under the guidance of a PSU transportation faculty mentor. This year's fellows are working on various research initiatives at TREC, including e-scooters, bicycle and pedestrian count data, multimodal trip generation, pedestrian safety and equitable transit.
TURF is funded by an education grant through our U.S. DOT funded program the National Institute for Transportation and Communities (NITC). Students were selected through a competitive application process; we had 103 applications from 23 U.S. states and 4 countries.
The TURF fellows will spend six weeks during the summer of 2019 at Portland State University, tackling transportation engineering and planning research questions.
MEET THE 2019 TURF FELLOWS
Anaisabel Crespo - Leiva, SUNY Plattsburgh
Research on older adults frequently explores the notion of “aging in place”—providing older adults the opportunity to continue to live in their own homes and communities. However one’s ability to stay or leave, particularly in old age, often depends on the built environment. An accessible neighborhood that prioritizes mobility affords the ability to meet basic needs like goods, services, and social activities.