Transportation Commons^™

Active Travelers, Competitive Consumers, Kelly J. Clifton, Christopher Devlin Muhs, Sara Morrissey, Tomás Morrissey, Kristina Marie Currans, Chloe Ritter

TREC Project Briefs

No abstract provided.

Perceptions Of Bicycle-Friendly Policy Impacts On Accessibility To Transit Services: The First And Last Mile Bridge, Mti Report 12-10, Bradley Flamm, Charles Rivasplata

Mineta Transportation Institute

The coordination of bicycle and transit modes has received close attention from public transit planners and researchers in recent years, as transit agencies around the world have installed bicycle racks on transit vehicles, implemented bicycles-on-trains policies, and made other efforts to facilitate bicycle-transit integration. Many planners presume that the catchment area for transit is enlarged by these efforts, but geographic changes in the size of catchment areas have not been effectively documented. This research project was designed to assess the distances travelled on bicycle by cycle-transit users (CTUs), both those who use bicycles as a means of access to transit …

Exercise Handbook: What Transportation Security And Emergency Preparedness Leaders Need To Know To Improve Emergency Preparedness, Mti Report 12-08, Frances Edwards, Daniel C. Goodrich

Mineta Transportation Institute

The U.S. Department of Homeland Security (DHS) has provided extensive general guidance on developing training and exercise programs for public entities, but little had been done to focus that material on the transportation sector specifically. Transportation sector emergency managers have noted that there should be specific guidance for developing exercises that are focused on the operational work of their agencies, in addition to the Logistics Section functions that are usually the focus of transportation sector entities in multi-agency, multi-jurisdiction exercises. The first section of his report provides information on federal training and exercise requirements for transportation sector entities. It summarizes …

Regional Planning, Greenhouse Gases, And Urbanfootprint Open Source Software, Garlynn Woodsong

PSU Transportation Seminars

Since about 2008, the planning world has been experiencing a paradigm shift that began in places like California and Oregon that have adopted legislation requiring the linking of land use and transportation plans to outcomes, specifically to the reduction of greenhouse gases (GHGs). In response to this need, Calthorpe Associates has developed a new planning tool, called UrbanFootprint, on a fully Open Source platform (i.e. Ubuntu Linux, PostGIS, PostGreSQL, etc.). As a powerful and dynamic web and mobile-enabled geo-spatial scenario creation and modeling tool with full co-benefits analysis capacity, UrbanFootprint has great utility for urban planning and research at multiple …

Modeling Injury Outcomes Of Crashes Involving Heavy Vehicles On Texas Highways, Salvador Hernandez

PSU Transportation Seminars

A growing concern related to large-truck crashes has increased in the State of Texas in recent years due to the potential economic impacts and level of injury severity that can be sustained. Yet, studies on large truck involved crashes highlighting the contributing factors leading to injury severity have not been conducted in detail in the State of Texas especially for its interstate system. In this study, we analyze the contributing factors related to injury severity by utilizing Texas crash data based on a discrete outcome based model which accounts for possible unobserved heterogeneity related to human, vehicle and road-environment. We …

Identficaton And Characterization Of Pollutant Hot Spots Integratng Probe Vehicle, Traffic And Land Use Data, Katherine Eleanor Bell, Miguel Figliozzi

PSU Transportation Seminars

Identification and Characterization of PM2.5 and VOC Hot Spots on Arterial Corridor by Integrating Probe Vehicle, Traffic, and Land Use Data: The purpose of this study is to explore the use of integrated probe vehicle, traffic and land use data to identify and characterize fine particulate matter (PM2.5) and volatile organic compound (VOC) hot spot locations on urban arterial corridors. An emission hot spot is defined as a fixed location along a corridor in which the mean pollutant concentrations are consistently above the 85th percentile of pollutant concentrations when considering all other locations along the corridor during the same time …

Effects Of The Objective And Perceived Built Environment On Bicycling For Transportation, Liang Ma, Jennifer Dill

PSU Transportation Seminars

Effects of the Objective and Perceived Built Environment on Bicycling for Transportation:
This paper investigates the relative effects of the objectively-measured built environment versus stated perceptions of the built-environment on bicycling. Data are from a random phone survey conducted in the Portland, Oregon region. Binary logit and linear regression models, using objective measures, perceived measures, and both sets of measures, were estimated to predict odds of bicycling and frequency of bicycling separately. Results showed that the perceived environment and objective environment had independent effects on bicycling. This suggests that future bicycling research should include both perceived and objective measures of …

Modeling The Impact Of Traffic Conditions On The Variability Of Mid-Block Roadside Pm2.5 On An Urban Arterial, Adam Moore

PSU Transportation Seminars

Modeling Impact of Traffic Conditions on Variability of Midblock Roadside Fine Particulate Matter Concentrations on an Urban Arterial: This paper presents an innovative modeling of fine particulate matter (PM2.5) concentrations as a function of very high resolution meteorological and traffic data. Peak period measurements were taken at a mid-block roadside location on an urban arterial commuter roadway. To capture the impact of dynamic traffic conditions, data were analyzed at 10-second intervals, with substantially higher resolution than typical roadside air quality study designs. Particular attention was paid to changes in traffic conditions, including fleet mix, queuing and vehicle platooning over the …

Evaluating Driver And Pedestrian Behaviors At Enhanced Multilane Midblock Pedestrian Crossings, Nick Foster

PSU Transportation Seminars

Case Study in Portland, Oregon This study examines driver and pedestrian behaviors at two enhanced midblock pedestrian crossings in Portland, Oregon. One crossing is on a five-lane arterial with a posted speed of 35/45 miles-per-hour (MPH) and features six rectangular rapid flash beacon (RRFB) assemblies and a narrow median refuge. The other crossing is on a suburban arterial with four travel lanes and a two-way left-turn lane. The crossing is enhanced with four RRFB assemblies and a median island with a “Z” crossing, or Danish offset, designed to encourage pedestrians to face oncoming traffic before completing the second stage of …

Benefit-Cost Evaluation Method For Transit Stop Removal, Zef Wagner

PSU Transportation Seminars

The introduction of wider stop spacing through the removal or consolidation of existing stops is one method transit agencies can use to reduce travel time and reliability on many transit lines. A great deal of research has been done to provide tools for determining optimal stop spacing, but tools are still needed to help service planners determine the optimal stops to remove. Stop-level bus performance data provide the information needed to develop a method for assessing the total benefits and costs to riders of removing individual stops. This tool compares the benefit to through-riders in terms of travel time savings …

Bicycling Is Different: Built Environment Relationships To Nonwork Travel, Christopher D. Muhs

PSU Transportation Seminars

There is growing investment in infrastructure to support non-motorized travel modes in the United States, in particular for bicycling. However, there remains a dearth of knowledge on the relationships between built environments and bicycling for non-work transportation. This issue is exacerbated by researchers and practitioners continuing to combine walking and bicycling into the category “non-motorized modes,” despite the two having many differences. This paper addresses these shortcomings through a segmented analysis of mode choice and mode share for walking, bicycling, and automobile travel. The data used are from a 2011 establishment intercept survey in the Portland, Oregon region and are …

Refining Shippers’ Dyadic Cost, Risk, And Delivery Responsibilities: The Principal Changes To Incoterms And A Transaction Cost Focus For The Future, Drew M. Stapleton, Vivek Pande, Soumen Ghosh, Uzay Damali

Journal of Transportation Management

We first explore the changes in the latest version of Incoterms and explain why and how they have been refined to better capture contemporary global and domestic shipping practices and policies. Next we graphically explain each of the eleven INCOTERMS 2010 and specify exact delivery points, those critical points at which cost and risk responsibilities shift from the Seller to the Buyer. We then provide a discussion to better explain the application of the terms from a practitioner’s view and note that many shippers and freight forwarders still revert to long practiced shipping policies, leaving themselves vulnerable. We close by …

Ballast Water Samples As "Scientific Evidence”, Jennie Folkunger

NSBWO

The Ballast Water Management Convention was established as a response to the global issue of the spread of invasive species. The entry into force of the Convention is supposedly imminent, but many issues remain to be solved to ensure its success in preventing the spread of invasive species. Considering the implications involved, it is of great importance for the success of the Convention that sampling procedures to determine compliance are robust and reliable. Further, sampling results must gain acceptance as scientific evidence and basis for enforcement actions. The IMO has produced guidelines and recommendations that are to be evaluated during …

Risk Assessments For New Bioinvasions For The North Sea Region, Josefin Madjidian

NSBWO

This deliverable is a compilation of summaries of four scientific papers that cover different aspects of risks connected to marine bioinvasions in the North Sea Region. One of the papers looks deeper into global shipping and adds several factors to shipping density to describe hotspots for potential invasions and invasion routes. Two of the papers dig into concerns of regional perspective (the Wadden Sea), one developing a model of a specific kind of water body’s vulnerability to non-native, the other dealing with questions related to when a species should be stated as a non-native and when it has become part …

Framing Transportation Planning Pedagogy For Sustainability Generalists, Beth Sweeney, Ann Scheerer, Vicki Elmer

TREC Final Reports

This paper describes a pilot graduate sustainable transportation course developed at the University of Oregon to provide hands-on project experience for students studying sustainability. New approaches to sustainability and transportation pedagogies will provide a galvanizing force for tomorrow’s graduates, who must respond to concerns about climate change and the environment, social equity, and an uncertain economy. They will require an aptitude for both technical skills and collaborative leadership and communication skills. The course was guided by a framework founded in five themes from the literature on sustainability education and transportation planning and engineering education: leading with sustainability’s cornerstones of people, …

Life In Hampton Roads Survey Press Release #4: The Changing Transportation Picture: Tolls And Traffic, Social Science Research Center, Old Dominion University

Life in Hampton Roads Survey Report

This report examines regional and sub-regional measures of transportation perceptions from the 2014 Life In Hampton Roads survey (LIHR 2014) conducted by the Old Dominion University Social Science Research Center.

An Operator Survey: Making Bus Travel Safer, James G. Strathman, Sung Moon Kwon

TREC Project Briefs

No abstract provided.

Multiday Gps Travel Behavior Data For Travel Analysis: The Effect Of Day-To-Day Travel Time Variability On Auto Travel Choices, Jennifer Dill, Joseph Broach, Kate Deutsch-Burgne, Yanzhi Xu, Randall Guensler, David Levinson, Wenyun Tang

Urban Studies and Planning Faculty Publications and Presentations

This project explored the potential of archived multi-day GPS data to expand the understanding of travel-time reliability. While reliability is often observed and considered at the system or segment level, travel-time uncertainty is also experienced at the household and trip level. Any move toward incorporating reliability into regional travel models will necessitate a re-examination of travel-time variation at more disaggregate levels. The analysis uses multiday vehicle-based GPS data analyzed within the Transportation Secure Data Center (TSDC). There were three major goals for the research. The first goal was to consider the ways in which multiday GPS data could be translated …

Exploring The Effects Of Adaptive Traffic Systems, Miguel A. Figliozzi, Christopher M. Monsere

TREC Project Briefs

Researchers conduct an in-depth analysis of traffic performance and associated vehicular emissions, before and after the installation of a SCATS unit.

Transportation Meets Social Welfare, Ellen M. Bassett, Andrée Tremoulet

TREC Project Briefs

OTREC researchers helped state transportation department staff members face a problem that isn’t strictly part of their job description: how best to deal with homeless individuals and households living in DOT rights of way and rest areas.

OTREC researchers examine the human relations impact of transportation and land management decisions involving homeless encampments.