Transportation Commons^™

Transportation Futures: Policy Scenarios For Achieving Greenhouse Gas Reduction Targets, Mntrc Report 12-11, Robert B. Noland, Andrew I. Kay, Robert B. Noland, Caroline J. Rodier

Mineta Transportation Institute

It is well established that GHG emissions must be reduced by 50% to 80% by 2050 in order to limit global temperature increase to 2°C. Achieving reductions of this magnitude in the transportation sector is a challenge and requires a multitude of policies and technology options. The research presented here analyzes three scenarios: changes in the perceived price of travel, land-use intensification, and increases in transit. Elasticity estimates are derived using an activity-based travel model for the state of California and broadly representative of the U.S. The VISION model is used to forecast changes in technology and fuel options that …

Mineta Transportation Institute Says Subways Are Still In Terrorists’ Sights, Brian M. Jenkins, Bruce R. Butterworth

Mineta Transportation Institute

The FBI arrested a California National Guard reservist on March 17 as he headed for the Canadian border on his way to Syria. Once in Syria, Nicholas Michael Teausant, who is also a student at San Joaquin Delta Community College in Stockton CA, planned to join the Islamic State of Iraq and the Levant (ISIL). Although he had never attended the army’s basic training course and was in the process of being discharged by the National Guard for failing to meet “basic education requirements,” Teausant thought he could teach the Syrian jihadists shooting skills and urban warfare tactics

Forcasting Senior Populations, Richard Lycan

Institute on Aging Publications

This project seeks to: Improve population forecasts for senior populations; Increase awareness of issues related to forecasting senior populations; Provide support to corecasters

Measuring Urban Bicyclists' Uptake Of Traffic-Related Pollution, Alexander Y. Bigazzi

PSU Transportation Seminars

Urban bicyclists’ uptake of traffic-related air pollution is still not well quantified, due to a lack of direct measurements of uptake and a lack of analysis of the variation in uptake. This paper describes and establishes the feasibility of a novel method for measuring bicyclists’ uptake of volatile organic compounds (VOC) by sampling breath concentrations. Early results from the data set demonstrate the ability of the proposed method to generate findings for transportation analysis, with statistically significant exposure and uptake differences from bicycling on arterial versus bikeway facilities for several traffic-related VOC. These results provide the first empirical evidence that …

America Moves: Transportation And Public Policy In The United States, Adie Tomer

Brookings Scholar Lecture Series

The United States is in a perpetual state of motion. Every day, Americans drive over 8 billion miles, board over 20,000 flights, and ship over 45 million tons of freight. But what drives all of this physical movement? And what is the relationship to public policy? This presentation will begin to answer those questions, utilizing a combination of quantitative metrics and policy analysis to explain how, where, and why Americans move. It will outline driving habits, and the disruptive moment every metropolitan area and state faces due to federal gridlock. It will map aviation patterns, and the emerging presence of …

Bike Planning Methods In Oregon Communities, Tara Weidner

PSU Transportation Seminars

In this seminar, Tara Weidner will discuss changes in the works to the State Analysis Procedures Manual (APM) to include three graduated levels of bike planning methods for use in Oregon communities, based on community size, data needs, and planning stage. These include the Bike Level of Traffic Stress (BLTS), a sketch tool used to assess bike network connectivity, the data-heavy Highway Capacity Manual Multi-modal Level of Service (MMLOS) procedures, and a simplified MMLOS developed by the same researchers.

Thomas Pinckney, Agent At Virginia, Tennessee And Georgia Air Line (Railroad), Inquires With W.G. Macdowell, Treasurer Of N.& W. Railroad (Norfolk & Western?), As To The Status Of A Claim Made By Shippers Compress Co., Thomas Pinckney

Broadus R. Littlejohn, Jr. Manuscript and Ephemera Collection

Thomas Pinckney, agent at Virginia, Tennessee and Georgia Air Line (railroad), inquires with W.G. Macdowell, treasurer of N.& W. Railroad (Norfolk & Western?), as to whether or not a claim of $1690.33 made by Shippers Compress Company has been paid to N. & W. October 25, 1887.

A Recipe For An Online, Geospatial Transit Performance Archive, Jon Makler

PSU Transportation Seminars

Where and when does overcrowding happen on TriMet's bus network? Which routes have the best on-time performance? Portland State University and TriMet have collaborated to make this kind of data available to anybody through Portal, PSU's transportation data archive for the Portland/Vancouver region. This presentation will cover the use of General Transit Feed Specification (GTFS) data for mapping TriMet’s performance data and the development of Portal’s innovative transit application. In the MAP-21 era of performance management, see how tools like Portal can support enhanced agency decision-making as well as community engagement.

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 …

Tls Newsletter. Volume 8, Edition 5. February, 2014, Unf Transportation And Logistics Society

Transportation & Logistics Society Newsletter

Inside the Newsletter: TLS Meeting on Wednesday, February 19th. TLS President's Corner. Upcoming Events. The Propeller Club of Jacksonville--What's in it for you! Get Involved: UNF Relay for LIfe. Get to Know TLS Assistant Marketing Director Veronica Perez. TLS on Tour: Target Distribution Center. Life after graduation with Taylor Barry

More Urban Form, Fewer Auto Trips, Kelly J. Clifton

TREC Project Briefs

Trip generation refers to the number of vehicle trips that are predicted to originate in a given zone. The Institute of Transportation Engineers (ITE) publishes standard trip generation rates for various land use types, but these rates are primarily measured in low-density suburban areas. There is national interest in building data that expands upon the existing ITE trip generation rates to include sites located in a multi-modal context.

In areas that have a more compact urban form, better access to transit and a greater mix of land uses, fewer vehicle trips may be generated there than ITE rates indicate. However, …

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 …

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 …

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 …

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 …

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 …

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 …

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 …