TRB Showcase of Portland State University student research in transportation: Part 1

The video begins at 4:13.

Wei Feng: Impacts of Economic, Technological and Operational Factors on the Economic Competitiveness of Electric Commercial Vehicles in Fleet Replacement Decisions

Electric commercial vehicles (ECV) have the potential to substantially reduce greenhouse gas emissions, noise, and pollution in urban areas. In addition, ECVs have lower per-mile operating costs and potentially lower maintenance costs. However, the initial purchase cost of ECVs is significantly higher than the purchase cost of a conventional diesel vehicle. From a purely economic perspective, there is a cost tradeoff between the low operating and maintenance costs of ECVs and their high initial capital costs.  In this paper, a fleet replacement optimization framework is employed to analyze the competitiveness of ECVs. Scenarios with different fleet utilization, fuel efficiency and sensitivity analysis of ten additional factors indicate that ECVs are more cost effective when conventional diesel vehicles’ fuel efficiency is low (8.2 miles/gallon) and daily utilization is more than 54 miles. Breakeven values of some key economic and technological factors that separate the competitiveness between ECVs and conventional diesel vehicles are calculated in all scenarios. For example, in low conventional diesel vehicle fuel efficiency and low daily utilization scenario, ECVs are more competitive when their purchase prices...

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Bicycle & Pedestrian Overcrossings; Carsharing Payment Integration

Two MURP presentations

The video begins at 3:53.

Researchers explore effects of COVID-19 on urban mobility

Webinar: Individual Wayfinding in the Context of Visual Impairment, Blindness, and Deafblindness

 

PRESENTATION ARCHIVE

OVERVIEW

In this presentation we will highlight our past research on human indoor-outdoor wayfinding on an urban college campus. Our work is aimed at facilitating independent travel for people with blindness and low vision. Our research was funded by two successive grants from the National Institute for Transportation and Communities/US Department of Transportation. One of the central research questions sought to capture wayfinding preferences, information needs, and lived experiences of blind and low-vision pedestrian travelers. The projects afforded close collaboration with external partners, and foremost the American Printing House for the Blind. Our focus in the presentation will be on the...

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Webinar: Addressing Bicycle-Vehicle Conflicts with Alternate Signal Control Strategies on Oct 16, 2018

Webinar: Addressing Bicycle-Vehicle Conflicts with Alternate Signal Control Strategies

EDUCATION LIBRARY ARCHIVE

Missed the webinar or want a look back? 

OVERVIEW

There is nationwide interest in supporting sustainable and active transportation modes such as bicycling and walking due to the many benefits associated with them, including reduced congestion, lower emissions and improved health. Although the number of bicyclists is increasing, safety remains a top concern. In urban areas, a common crash type involving bicycles at intersections is the “right hook” where a right-turning vehicle collides with a through bicyclist. While geometric treatments and pavement markings have been studied, there is a lack of research on signal timing treatments to address right-hook bicycle-vehicle conflicts.

Addressing Bicycle-Vehicle Conflicts with Alternate Signal Control Strategies, published in April 2018, is the first study to explore bicycle signal control strategies for addressing bicycle-vehicle conflicts. This study analyzed the operational impacts of traditional...

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Portland's Cycle Track and Buffered Bike Lanes: Are they working?

The video begins at 2:04.

Abstract: Findings will be presented on an evaluation of two innovative bicycle facilities installed in late summer and early fall 2009 in downtown Portland aimed at providing a more separated and comfortable experience for cyclists. The SW Broadway cycle track (near PSU) and the couplet of buffered bike lanes on SW Stark and SW Oak were evaluated to understand how they are functioning on multiple levels. Each facility involved removing a motor vehicle lane by restriping to provide additional roadway space to bicyclists. The facilities were evaluated after they had been in place for approximately one year. Data collected to support this evaluation consisted of surveys of multiple user groups for each facility type, and video data collected by the City of Portland Bureau of Transportation at intersections along each of the routes to understand the facilities' impact on traffic flow, operations and user interactions.

Linking Fuel Prices, Transportation, Land Use and Economic Activity: A Review of Empirical Findings

View slides

The video begins at 5:38.

Exploring Factors Influencing Perceived Walking Distance to Light Rail Transit Stations -AND- Employer Incentives and Mode Choice

The video begins at 5:35.

Transportation Data Education: SQL Workshop

Join us for a three day introductory in-person workshop on databases and SQL

June 17, 18, and 20, 1:00 pm - 4:30 pm

Each day will be a combination of a lecture and practical. We will cover:

  • Introduction to relational databases.
  • Structured query language (SQL).
  • How to setup a PostgreSQL database on your local machine and use it to analyze data.

Software Requirements

You will be expected to bring your own laptop and have all required software installed prior to the workshop. If you are using a work-issued laptop, you will most likely need administrator privileges to install the following required software:

REGISTRATION

General: $325
Non-profit and community-based organizations: $125
PSU Students: $10 

PROFESSIONAL DEVELOPMENT

This three-day workshop is eligible for 9 hours of professional...

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Friday Transportation Seminar: Student Presentations from TRB, Week 1

*NEW* LOCATION: Karl Miller Center at PSU, 631 SW Harrison St., Room 465
*NEW* REGISTRATION: Sign up through GoToWebinar

SEMINAR VIDEO

Friday Transportation Seminar: Student Presentations from TRB 2018, Week 1


HUAJIE YANG 

...

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