Transportation Commons^™

Capturing The Ride: Exploring Low-Density Flexible Transit Alternatives In Salem-Keizer, Darwin Moosavi

PSU Transportation Seminars

Current fixed-route transit service provided by Salem-Keizer Transit is inefficient in the low-density neighborhoods of West Salem, South Salem, and Keizer. The lack of sidewalks, non-gridded circuitous streets, and large single-family residential lots all contribute to a lack of ridership. As a result, traditional fixed-route transit service is not cost-effective in these areas. Through a five month planning process, a group of Portland State University graduate students, better known as Paradigm Planning, tackled the task of addressing this problem in each of the three study areas. Paradigm’s planning process explored mode and route options in order to produce a plan …

Pedestrian Safety And Culture Change, Ron Van Houten

PSU Transportation Seminars

This session will describe the process and results of a NHTSA study that showed a change in driver culture of yielding to pedestrians in crosswalks on a citywide basis. The research won the Pat Waller award from the National Academy of Sciences, Transportation Research Board in January of this year. The approach to changing road user behavior focused on an integrated approach that include Enforcement, Engineering, and Educational efforts that were designed to be dovetailed together and that included a social norming component. Additional information will be provided on engineering solutions that can facilitate changes in pedestrian level of service …

Analytical Efficiencies Through The Integration Of Modeling And Simulation Tools, Steve Perone

PSU Transportation Seminars

Linking planning and operations is vital to improving transportation decision making and the overall effectiveness of transportation systems. In this seminar Steve will discuss data and modeling methods supported by the PTV Vision software suite to facilitate integrated planning for operations.

Highlights From The Green Lane: A Comprehensive Evaluation Of Protected Cycling Facilities, Christopher Monsere, Jennifer Dill

PSU Transportation Seminars

Cycling is on the rise across the U.S. and its popularity has grown beyond the usual leaders - Portland, OR, Seattle, WA, Davis, CA, Minneapolis, MN and Boulder, CO. New York City, NY Chicago, IL and Washington, DC are among those cities making significant investments in bike infrastructure in recent years and have realized substantial growth in people taking to the streets on two wheels. This presentation will summarize some results from our comprehensive assessment of the safety, operations, economic impacts, user experience, and perceptions of new protected bikeways in 5 cities U.S. cities (Austin, TX; Chicago, IL; Portland, OR; …

The Breach Of Security At San Jose’S Airport Raises Broader Issues, Brian M. Jenkins

Mineta Transportation Institute

This Transportation Security Perspective is the fifth in a continuing series produced by the National Transportation Safety and Security Center of the Mineta Transportation Institute. These examine major terrorist attacks and trends in terrorists targeting surface transportation. Previous perspectives include the bus attack in Abuja, Nigeria, the terrorist bombings in Volgograd, Russia; the assault on passengers at the Kunming train station in China; and more.

Observability In Traffic Modeling: Eulerian And Lagrangian Coordinates, Sergio Contreras

UNLV Theses, Dissertations, Professional Papers, and Capstones

Traditionally, one of the ways traffic flow has been studied is by using the kinematic wave model. This model is studied in the Eulerian framework. Recently, the kinematic wave model has been transformed into Lagrangian coordinates. This model of traffic flow together with the concept of observability for linear time invariant discrete time systems is applied to study the observability of four sections of a freeway in both Eulerian and Lagrangian coordinates. A system with densities in four sections of a freeway is designed, and the observability of the system is studied with different situations for sensors. When the system …

Mechanisms For Arranging Ride Sharing And Fare Splitting For Last-Mile Travel Demands, Shih-Fen Cheng, Duc Thien Nguyen, Hoong Chuin Lau

Research Collection School Of Computing and Information Systems

A great challenge of city planners is to provide efficient and effective connection service to travelers using public transportation system. This is commonly known as the last-mile problem and is critical in promoting the utilization of public transportation system. In this paper, we address the last-mile problem by considering a dynamic and demand-responsive mechanism for arranging ride sharing on a non-dedicated commercial fleet (such as taxis or passenger vans). Our approach has the benefits of being dynamic, flexible, and with low setup cost. A critical issue in such ride-sharing service is how riders should be grouped and serviced, and how …

The Fundamental Law Of Highway Congestion Revisited: Evidence From National Expressways In Japan, Wen-Tai Hsu, Hongliang Zhang

Research Collection School Of Economics

The fundamental law of highway congestion states that when congested, the travel speed on an expanded expressway reverts to its previous level before the capacity expansion. In this paper, we propose a theory that generalizes this statement and finds that if there exists a coverage effect, that is, the effect of longer road length on traffic conditional on capacity, then the new equilibrium travel speed could be lower than its previous level. Given the fundamental law, the theory predicts that the elasticity of traffic to road capacity is at least 1. We estimate this elasticity for national expressways in Japan …

Wheels On The Bus: School Transportation As A Reflection Of Sprawl, Autumn C.E. Arthur, Natasha M. Eulberg, Kevin C. O'Malley

Student Publications

The second half of the twentieth century constituted a change in land use ideology and development practice brought about by the rise of the automobile, increasing economic upward mobility, and privatization of the family home. During this time, the districting and building of public schools similarly changed, turning schools from local community centers to regional and de-contextualized places of education. The purpose of this study was to investigate the extent to which these development practices have caused children to rely on car and bus transportation to get to and from school. Using the variable of distance within a GIS analysis …

Highway Routine Maintenance Cost Estimation For Nevada, Monika Hagood

UNLV Theses, Dissertations, Professional Papers, and Capstones

State highway agencies are obligated to maintain existing roads for the highway systems to work efficiently and with greater longevity. Every year NDOT is responsible for approximately 13,150 lane miles of existing infrastructure. With that in mind, resources need to be provided to maintain the highway system.

The purpose of this research was to estimate annual routine maintenance cost for several typical treatment methods of highways. Five prioritization categories of highways used by NDOT were considered. Linear regression models were developed that present the relationship between costs including total maintenance cost and five maintenance cost components: labor, equipment, materials, manpower …

Simultaneous Equation Modeling For Crash Rate Of Freeway Segments, Anthony Ramos

UNLV Theses, Dissertations, Professional Papers, and Capstones

In 2010, the total number of reported traffic crashes in the state of Nevada was 51,664 of which 235 (0.6%) resulted in one or more deaths (Nevada Department of Transportation, 2012). The state's "Zero Fatalities" traffic safety campaign aims to reduce the rate even further. Out of the total number of crashes, Clark County (includes Las Vegas) accounted for 78.89%. This study examines safety improvement by developing advanced crash prediction models. The system of crash prediction equations consider geometric conditions and traffic volume using simultaneous equation modeling (SEM). The models are based on geometric characteristics and traffic volume data collected …

Smart Data Collection Using Mobile Devices To Improve Transportation Systems, Tharindu Dasun Abeygunawardana

UNLV Theses, Dissertations, Professional Papers, and Capstones

Travel time is a matter that affects most of us, especially those that live in highly congested cities. Ideally, we want to reduce travel time as much as possible, thereby freeing up more of our time and enabling a higher quality of life. Data collection of transportation metrics helps us get a clearer picture of the transportation system, and helps us make smarter choices when it comes to improving the existing system. The rapid emergence of interconnected mobile devices carried along by travelers opens up many possibilities for gathering data as they travel, and also to serve them relevant data …

Stress And Coping As A Function Of Experience Level In Collegiate Flight Students, Jennifer Kirschner, John Young, Richard Fanjoy

Journal of Aviation Technology and Engineering

Aviation as an industry requires a high degree of precision at all times. Large amounts of stress have been known to decrease performance to undesirable levels. While stress reactions and the coping skills used after encountering stressful situations differ from person to person, generalities can be made by comparing differences between groups. A large number of pilot applicants receive initial training within a university flight program each year. In order to better understand the perceived stress level and the coping skills used by these students, the current research project administered a perceived stress test and a coping skills inventory to …

Blue And Orange Lunch Line, Donald Riger

College of Business and Economics Presentations

The fall 2013 section of Supply Chain Management 420-Creating Sustainable Goods and Services, taught by Dr. Tom Gattiker, completed a group project using the Green Breakthrough process which is based on Design Thinking. The assignment for this portion of the course was a written proposal for a product or service that:

– Is highly innovative, not incremental

– Meets a customer (e.g. student, faculty) need

– Has a significant environmental benefit

– Related to the BSU / our campus

– Customer facing

– Could be implemented at BSU (or nearby) within one year

I was a member of team 2 …

Transportation And Road Weather, Rhonda Young

PSU Transportation Seminars

Weather has a tremendous impact on the transportation system and is one of the largest contributors to non-recurring delay and increased crashes. Road weather is the a multidisciplinary area involving transportation engineers and meteorologists who are working to mitigate the negative effects of weather on the operation and maintenance practices of transportation systems. The talk covers the broad types of issues being studied in this field and looks at ways in which technology is playing a large part in the proposed solutions. The issue of weather as a complicating factor in the use of connected and autonomous vehicle technologies is …

Transit Planning Practice In The Age Of Transit-Oriented Development, Ian Carlton

PSU Transportation Seminars

Transit serves as backbone infrastructure for many regional and local visions for sustainable urban development. Also, many modern policies predicate transit funding on the potential for transit-oriented development (TOD) near proposed infrastructure investments. However, little research has examined how TOD considerations have informed transit planning. This presentation discusses the results of recent dissertation research that fills this gap. Through multiple transit project case studies and interviews with nearly 100 transit planning professionals, this research categorized how transit projects across 19 U.S. regions were designed to foster TOD and how transit planning professionals identified TOD opportunities as projects were planned. During …

An Introduction To The Nacto Urban Street Design: Changing The Dna Of City Streets, Peter Koonce

PSU Transportation Seminars

In this seminar Peter will summarize his contributions to the NACTO Urban Street Design Guide, a guidebook focused on a paradigm shift in transportation, pulling away from the traditional bias toward highway designs that do not always meet the complex needs of streets in cities.

Resilient Communities/Resilient Families, Center For Social Policy, University Of Massachusetts Boston

Office of Community Partnerships Posters

The Center for Social Policy (CSP) serves as a strategic learning and evaluation partner to The Boston Foundation (TBF). TBF’s investment and people and place-based initiatives seek to make sustainable, positive change through community and economic development in neighborhoods along the Fairmount-Indigo transit line in Boston. As part of the Resilient Communities/Resilient Families (RC/RF), CSP with Mattapan United and Millennium 10 (in Codman Square/Four Corners) to identify community priorities for neighborhood change. From 2013-2015, the Center team is evaluating these neighborhood change efforts, as well as other initiatives aimed at increasing economic well-being for neighborhood residents.

Pacific Visual Impairment Project, School For Global Inclusion And Social Development, University Of Massachusetts Boston, College Of Education And Human Development, University Of Massachusetts Boston, University Of Guam - Center For Excellence In Developmental Disabilities Education, Research & Service

Office of Community Partnerships Posters

The primary goal of the Pacific Vision Impairment Project (VIP) is to increase the pool of fully credentialed, effective personnel educating students who are blind or have a Vision Impairment in remote areas where services either do not exist or need additional support.

Addressing The Supportive Transportation Challenges Of Community-Residing Older Adults, Nina M. Silverstein, Kristina M. Turk, Laura Adams, Holly Belanger, Linnea Burke, Stephen Jones, Lauren Lee, David Lopez, Keith Sherman, Lee Paradis, Erin O’Neill, Alycia Rao, Rachael Solano

Office of Community Partnerships Posters

The ability to get to where you want to go, when you want to go there is a key factor for aging-in-place in our communities. It is often taken for granted until that ability is compromised. The informal network of family and friends, if it exists, is not likely to be a sustainable transportation alternative for persons with cognitive impairment or for older adults with limitations that may not fit eligibility criteria for senior transportation services, where they exist. The purpose of this study was to investigate the potential of communities to address the specialized supportive mobility needs of community-residing …