Webinar: The Impact of Transportation-Related Barriers on Self-Perceived Physical Health among Adults in the US

Tuesday, October 12, 2021, 10:00am to 11:00am PDT

PRESENTATION ARCHIVE

OVERVIEW

Drawing from the framework of social determinants of health, the objective of this study is to investigate the cross-sectional association between transportation-related factors and self-perceived physical health among adults in the U.S.

Data for this study were derived from the 2017 National Household Travel Survey. An analytic sample of 71,235 respondents aged 18 and 64 years was analyzed using binary logistic regression. Of the 71,235 respondents examined, 8.9% perceived their physical health to be poor. About 36% of the respondents had fewer vehicles per individuals in the household.

Controlling for the effects of other factors, respondents who had fewer vehicles per individuals in the household were 1.27 times more likely to report poor self-perceived physical health when compared to their counterparts with more vehicles per individuals in the household (AOR=1.27, 95% CI=1.17-1...

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Friday Transportation Seminar: An Assessment of Bicycle Detection Confirmation and Countdown Devices

Friday, October 8, 2021, 11:30am to 12:30pm PDT

PRESENTATION ARCHIVE

THE TOPIC

For a person on a bicycle at intersections, trail crossings, or midblock locations that are signalized, knowing that they have been detected and how long they must wait to receive a green indication is valuable information. This presentation will summarize the findings from the online survey (1,048 responses), observed behaviors (2,428 persons on bicycle), and an intercept survey ( 234 persons) to understand blue light feedback devices and countdown timers at signalized intersections. 

Findings suggest that the design where the blue light was embedded in the sign was more visible to cyclists and observed by higher proportions of cyclists in the field. Results show that a bicycle signal countdown timer elicited high comprehension rates. At all locations, cyclists indicated that the devices improved their waiting experience.

KEY...

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Friday Transportation Seminar: Turning Streets Into Housing

Friday, October 1, 2021, 11:30am to 12:30pm PDT

 

PRESENTATION ARCHIVE

THE TOPIC

Wide residential streets in US cities are both a contributor to homelessness and a potential strategy to provide more affordable housing. In residential neighborhoods, subdivision ordinances typically set binding standards for street width, far in excess of what is economically optimal or what private developers and residents would likely prefer. These street width standards are one contributor to high housing costs and supply restrictions, which exacerbate the housing affordability crisis in high-cost cities.

Cities can certainly reduce street widths in new development. But what about existing neighborhoods? Dr. Adam Millard-Ball proposes two strategies through which excess street space can accommodate housing in a formalized way. First, cities could cede part of the street right-of-way to adjacent property owners, either as part of new development or as a means to create space for front...

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Webinar: Data-Driven Mobility Strategies for Multimodal Transportation

Wednesday, September 15, 2021, 10:00am to 11:00am PDT

PRESENTATION ARCHIVE

OVERVIEW

Multimodal transportation systems (e.g., walking, cycling, automobile, public transit, etc.) are effective in increasing people’s travel flexibility, reducing congestion, and improving safety.  Therefore, it is critical to understand what factors would affect people’s mode choices. With advanced technology, such as connected and automated vehicles, cities are now facing a transition from traditional urban planning to developing smart cities. To support multimodal transportation management, this study serves as a bridge to connect speed management strategies of conventional corridors to connected vehicle corridors.

The study consists of three main components. In the first component, the impact of speed management strategies along traditional corridors was evaluated. In the second component, the impacts of the specific speed management strategies, signal retiming and...

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Summer Transportation Camp at PSU: Girls

Monday, August 9, 2021, 9:00am PDT to Friday, August 13, 2021, 5:00pm PDT

Hosted at Portland State University, this week-long day camp (free and open to any female-identified Oregon student entering the 9–12 grade) offers an immersive introduction to transportation careers and the workings of transportation systems in Portland. Learn more about this year's camp and apply here!

Partner Event: 2021 World Symposium on Transport and Land Use Research

Monday, August 9, 2021, 7:00am PDT to Wednesday, August 11, 2021, 5:00pm PDT

PRESENTATION ARCHIVE

The World Society for Transport and Land Use Research (WSTLUR) promotes the understanding and analysis of the interdisciplinary interactions of transport and land use, offers a forum for debate, and provides a mechanism for the dissemination of information. The Society organizes the World Symposium on Transport and Land Use Research. The first symposium was held in Whistler, Canada 2011, the second was held at Delft, The Netherlands in 2014, and the third took place in Brisbane, Australia in 2017. 

TREC is co-sponsoring the 2021 World Symposium on Transport and Land Use Research (WSTLUR) to be held virtually August 9-11, 2021. The conference will feature over 100 papers, with authors from 30 different countries around the globe, networking opportunities, a dissertation competition, and some fun, interactive sessions. Keynote events include talks from Dr. Susan Handy, Distinguished Professor at University of California Davis and Dr. Juan Pablo Bocarejo Suescun, Associate...

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Transportation Data Webinar: A Brief Introduction to Relational Databases & SQL

Wednesday, July 21, 2021, 2:00pm to 3:30pm PDT

PRESENTATION ARCHIVE

OVERVIEW

The world is awash in data, and the data available to transportation analysts and planners is growing by the minute. With this rapid growth, traditional data analysis tools may no longer be effective. Relational databases such as Microsoft SQL Server, PostgreSQL and Oracle are one tool that can be used to manage and query large data sets. In this webinar, we give a brief introduction to relational databases and SQL — the language that is used to communicate with relational databases. Participants will learn the key structures of relational databases (relations, keys and types), and will learn how to write simple SQL queries. We will practice writing SQL queries during the training. Additional resources will be provided for participants who wish to continue practicing their new SQL skills after the training. Join us to learn a bit more about how to manage those large data sets!

KEY LEARNING TAKEAWAYS

  • Understand relational database schema: relations, keys and types
  • Write single and multiple table SQL queries (e.g. SELECT, JOIN, WHERE)
  • Write SQL aggregate queries (e.g. COUNT, SUM)
  • ...
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Summer Transportation Camp at PSU: All Genders

Monday, July 19, 2021, 9:00am PDT to Friday, July 23, 2021, 5:00pm PDT

Hosted at Portland State University, this week-long day camp (free and open to any Oregon student entering the 9–12 grade) offers an immersive introduction to transportation careers and the workings of transportation systems in Portland. Learn more about this year's camp and apply here!

Webinar: Electric Bus Deployment: Cost and Environmental Equity

Tuesday, June 8, 2021, 10:00am to 11:00am PDT
 

PRESENTATION ARCHIVE

OVERVIEW

This presentation introduces an innovative spatiotemporal analytical framework and web-based visualization platform developed by researchers at the University of Utah to assist transit agencies in identifying optimal deployment strategies for a battery-electric bus (BEB) system by using a combination of mathematical programming methods, GIS-based analysis, and multi-objective optimization techniques. The framework allows transit agencies to optimally phase in BEB infrastructure and deploy the BEB system in a way that can minimize the capital and operational cost of the BEB system while maximizing its environmental benefits (i.e., emission reduction).

KEY LEARNING OUTCOMES

  • Introduction to a bi-objective spatiotemporal optimization model for the strategic deployment of BEBs to minimize the cost of purchasing BEBs, on-route and in-depot charging stations, and to maximize environmental equity for disadvantaged populations.
  • The optimization considers the unique constraints imposed by BEB...
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Webinar: Eliminating Cash Options for Public Transit Fares: Costs, Benefits and Equity Impacts

Tuesday, May 11, 2021, 10:00am to 11:00am PDT

PRESENTATION ARCHIVE

OVERVIEW

Many transit agencies plan to automate their fare collection and limit the use of cash, with the goals of improving boarding and data collection while lowering operating costs. Yet about 10% of adults in the United States lack a bank account or credit card, and many either rely on restrictive cell-phone data plans or don’t have access to internet or a smartphone. 

This webinar will present part of a larger research project exploring these issues in the cities of Denver, Colorado, and Eugene and Portland–Gresham, Oregon. In this part, we explore the tradeoffs between reducing cash acceptance, ridership and the costs of fare collection systems. How much does it save to reduce cash acceptance, verses ridership and equity impacts?

We will also present a cost-effectiveness framework that combines a qualitative and quantitative analysis and use this model to explore case scenarios in our three cities. The model shows that adding a retail network to...

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