Transportation Commons^™

Making Streets Into Complete Streets, Marc Schlossberg, John Rowell

TREC Project Briefs

Researchers created a manual to aid planners in adopting complete streets policies and designs.

Transit Can Inspire Neighborhood Revitalization, Gerardo Francisco Sandoval, Roanel Herrera

TREC Project Briefs

In-depth case studies explore how transit-oriented development can revitalize neighborhoods without displacing low-income residents.

Travel Decisions & Their Implications For Urban Transportation: From Campus Transportation To Statewide Modeling, Gulsah Akar

PSU Transportation Seminars

The ability to forecast future transportation patterns under a particular land-use scenario or urban form is key to making informed decisions at the local and regional levels.

Although several researchers have explored the links between the built environment, socio-demographics and travel behavior, a consensus is not reached.

This talk highlights two recent projects. The first project focuses on individuals’ attitudes towards transportation, neighborhood characteristics and their effects on campus commuters’ transit use, and addresses the question whether attitudes, the built environment or a combination of both explains the resulting transit use better.

The second part presents the Regional Land Use …

2014 Transit Oriented Developments Survey, Jennifer Dill, Nathan Mcneil

TREC Final Reports

This report presents results from surveys of residents at several transit-oriented developments (TODs) in Portland, Hillsboro, Tigard, and unincorporated Clackamas County. The research complements our previous survey work for Metro done at eight TODs in 2010 and 11 TODs in 2007.

Efficient Reverse Top-K Boolean Spatial Keyword Queries On Road Networks, Yunjun Gao, Xu Qin, Baihua Zheng, Gang Chen

Research Collection School Of Computing and Information Systems

Reverse k nearest neighbor (RkNN) queries have a broad application base such as decision support, profile-based marketing, and resource allocation. Previous work on RkNN search does not take textual information into consideration or limits to the Euclidean space. In the real world, however, most spatial objects are associated with textual information and lie on road networks. In this paper, we introduce a new type of queries, namely, reverse top-k Boolean spatial keyword (RkBSK) retrieval, which assumes objects are on the road network and considers both spatial and textual information. Given a data set P on a road network and a …

Passenger Flows In Underground Railway Stations And Platforms, Mti Report 12-43, Anastasia Loukaitou-Sideris, Brian D. Taylor, Carole Turley Voulgaris

Mineta Transportation Institute

Urban rail systems are designed to carry large volumes of people into and out of major activity centers. As a result, the stations at these major activity centers are often crowded with boarding and alighting passengers, resulting in passenger inconvenience, delays, and at times danger. This study examines the planning and analysis of station passenger queuing and flows to offer rail transit station designers and transit system operators guidance on how to best accommodate and manage their rail passengers. The objectives of the study are to: 1) Understand the particular infrastructural, operational, behavioral, and spatial factors that affect and may …

Changes In Transit Use And Service And Associated Changes In Driving Near A New Light Rail Transit Line, Mti Report 12-44, Hilary Nixon, Marlon Boarnet, Doug Houston, Steven Spears

Mineta Transportation Institute

Los Angeles is pursuing possibly the most ambitious rail transit investment program in the nation with plans to open six new rail transit lines between now and 2019. The report provides policy makes and planners a better understanding of the potential impacts of Los Angeles Metro’s rail transit investment program by assessing the changes in transit use of nearby residents and nearby bus service associated with the Expo Line, the first of the six new lines. Our findings indicate that changes in bus service that are coincident with the introduction of new light rail transit can negatively affect the overall …

Solving Multi-Vehicle Profitable Tour Problem Via Knowledge Adoption In Evolutionary Bi-Level Programming, Stephanus Daniel Handoko, Abhishek Gupta, Chen Kim Heng, Hoong Chuin Lau, Yew Soon Ong, Puay Siew Tan

Research Collection School Of Computing and Information Systems

Profitable tour problem (PTP) belongs to the class of vehicle routing problem (VRP) with profits seeking to maximize the difference between the total collected profit and the total cost incurred. Traditionally, PTP involves single vehicle. In this paper, we consider PTP with multiple vehicles. Unlike the classical VRP that seeks to serve all customers, PTP involves the strategic-level customer selection so as to maximize the total collected profit and the operational-level route optimization to minimize the total cost incurred. Therefore, PTP is essentially the knapsack problem at the strategic level with VRP at the operational level. That means the evolutionary …

Using Multimodal Performance Measures To Prioritize Improvements On Us 101 In San Luis Obispo County, Jessica Berry

PSU Transportation Seminars

The US 101 Corridor Mobility Master Plan in San Luis Obispo was a two-year planning effort that evaluated the 70 mile corridor on 12 performance measures. This collaborative effort was led by the San Luis Obispo Council of Governments (SLOCOG).

Performance based planning is becoming more important for agencies receiving State and Federal funding. Smaller, rural regional agencies will have to find ways to collect, report, and use performance metrics with limited resources. SLOCOG's first performance-based planning effort was the US 101 Corridor Mobility Master Plan, funded through a State grant.

Funding for this project came from a …

Webinar: Impacts Of Roadway And Traffic Characteristics On Air Pollution Risks For Bicyclists, Alexander Y. Bigazzi

TREC Webinar Series

Active travel such as walking and bicycling can lead to health benefits through an increase in physical activity. At the same time, more active travelers breath more and so can experience high pollution inhalation rates during travel. This webinar will review the state of knowledge about how roadway and traffic characteristics impact air pollution risks for bicyclists, including the latest PSU research quantifying bicyclists' uptake of traffic-related air pollution using on-road measurements in Portland. The PSU research team including Alex Bigazzi, Jim Pankow, and Miguel Figliozzi quantified bicyclist exposure concentrations on different types of roadways, respiration responses to exertion level, …

Dash: The Portland Region's Next-Generation Activity-Based Model, Richard Walker

PSU Transportation Seminars

DASH is the next generation activity based model being developed by the Metro Research Center. Upon completion, it will be one of the most advanced in the nation. This model will be used extensively in estimating the activity and travel response of individuals to policies and infrastructure investments. Compared to past models, it will include enhanced consideration of the socio-economic roles of individuals, discrete temporal dynamics, and intra-household dependencies.

Smarter Cycling, Cory Koehler, Richard Smith, Sarah St. Clair, Alex Taylor, Aubrey Masten, Konon Phillips

PSU High School Innovation Challenge

With the current trend of urbanization, the populations of major cities such as Portland are steadily increasing. This is causing a variety of problems, both within the city and in rural areas. In regards to the city, the major challenges facing city planners are the need for the expansion of residential neighborhoods and a rise in traffic throughout the city. One way to tackle the issue of an abundance of traffic, is to make alternate means of transportation more appealing to residents. We chose to focus on bicycling because of the bike‐friendly culture already in place in Portland. An increase …

Geometric Design, Speed, And Safety, Richard J. Porter

PSU Transportation Seminars

In this seminar, Dr. Porter will explore the interactions of geometric design decisions, speed, and safety. A performance-based approach to this topic will be considered given the availability of several key documents, including the Highway Safety Manual and TRB's Modeling Operating Speed: Synthesis Report as well as a significant body of published research. A historical look at the design speed concept will show that while the design speed definition has changed on more than one occasion, the same basic but flawed philosophy that relates design speed to a “safe speed” is still reflected in supplemental guidance related to design speed …

The Sfpark Pilot: Using Data To Make Cities Better, Kathryn Doherty-Chapman

PSU Transportation Seminars

SFpark was a federally-funded pilot program of a new approach to managing parking in San Francisco. It utilized real time data to identify parking availability, and demand-responsive parking pricing to help make parking easier to find. Parking management is an invaluable transportation demand management tool and the SFpark pilot demonstrated how data can help cities make smarter decisions. Come hear about the pilot evaluation results from a former SFpark staffer and PSU alum.

Analyzing Driver Behavior And Traffic Flow Breakdowns At The Hampton Roads Bridge Tunnel, Michelle L. Allen

Civil & Environmental Engineering Theses & Dissertations

The Hampton Roads Bridge Tunnel (HRBT) is a major link for activity in Hampton Roads. The eastbound direction also suffers from congestion during both morning and peak hours. During these periods of congestion, the flow rate varies in regards to the location of the congestion. This study focuses on investigating driver behavior during these different conditions and briefly investigates the cost of delay due to the different capacities. To accomplish this, per vehicle record data (PVR) is used. This data, collected at the exit of the tunnel, provides information on arrival time, speed, lane location, vehicle class, and time headway. …

Methods To Increase Fuel Efficiency In Post-Production Automobiles, Hope J. Corsair

TREC Final Reports

While much focus has been placed upon the identification of completely novel technologies for the future of personal transportation world-wide, the majority of the US and the world at large will be reliant upon petrol for personal transportation well into the future. While EVs, alternative fuels, and hybrid cars have all started to make an impact on the market, with varying amounts of success and consumer accessibility, their relative market share is and is projected to continue to be low. Furthermore, a large segment of the population is not readily able to ever purchase a new car as a consumer …

Lawyered Up: Local Communities, Courts, And Urban Renewal, Madeline Spolin

Sociology Honors Projects

What is the role of the judicial system in solving issues of urban renewal? I propose that communities use courts as a redress to become part of the decision making process on urban renewal issues, because courts provide procedural issues that are easily open to challenge in federal statute. I analyze public statements made throughout the construction of the Green Line in Minneapolis and St. Paul, Minnesota, a federally funded urban renewal project. In spite of built in public consultation processes, changes to transit design do not occur when concerns are raised at public consultation meetings; instead, they come from …

Tls Newsletter April, 2015, Unf Transportation And Logistics Society

Transportation & Logistics Society Newsletter

Inside the Newsletter: TLS Celebration Social III at the Boathouse. TLS President's Corner. Upcoming Events. Get to Know Lisa NGuyen, TLS Secretary. CTL Certification: What you need to know before you graduate. Congratulations to Coggin Transportation and Logistics Graduates. Life After Graduation with Lacey Greene, CTL

Impacts Of Beijing Bus Rapid Transit On Pre-Owned Home Values, Hao Pang, Junfeng Jiao

Research Collection College of Integrative Studies

Bus Rapid Transit (BRT) has gained increasing popularity worldwide in the last few decades. However, few studies have investigated BRT’s impacts on property values in Chinese cities. This research, taking BRT route 1 (BRT1) and BRT route 3 (BRT3) in Beijing as examples, showed that proximity to BRT3 stops is weakly related to pre-owned home prices along the route, whereas BRT1 has induced a significant price premium. For BRT1, the impact is not linear. Specifically, pre-owned home prices for homes within 5–10 minutes’ walking distance to BRT stations is 5.35% higher than those located closer to or farther away. The …

Electric Vehicles With A Battery Switching Station: Adoption And Environmental Impact, Buket Avci, Karan Girotra, Serguei Netessine

Research Collection Lee Kong Chian School Of Business

The transportation sector's carbon footprint and dependence on oil are of deep concern to policy makers in many countries. Use of all-electric drive trains is arguably the most realistic medium-term solution to address these concerns. However, motorist anxiety induced by an electric vehicle's limited range and high battery cost have constrained consumer adoption. A novel switching-station-based solution is touted as a promising remedy. Vehicles use standardized batteries that, when depleted, can be switched for fully charged batteries at switching stations, and motorists only pay for battery use. We build a model that highlights the key mechanisms driving adoption and use …