Transportation Commons^™

Tls Newsletter, Volume 5, Edition 1. January, 2011, Unf Transportation And Logistics Society

Transportation & Logistics Society Newsletter

In the newsletter: In the Know--When Opportunity Knocks Will you be ready to answer? Life after graduation with Toby Robin. Important Upcoming Dates. Get to know TLS President Shatise Johnson. FYI--Christmas Begins at Hubbard House

Lessons Learned In Attempting To Survey Hard-To-Reach Ethnic Segments Along With The Presentation Of A Comprehensive Questionnaire, Research Report Wp-10-02, Richard A. Werbel

Mineta Transportation Institute

A survey questionnaire was developed and administered to transit users in the Sacramento Metropolitan Area to analyze the degree to which global satisfaction with transit is impacted by ethnicity and other relevant independent variables. Although the data collected was not analyzed because the sample size was substantially smaller than required, the questionnaire used, which is included in its entirety in an appendix, has some uncommon variables and measurement approaches that can be used in a number of other survey questionnaires used in transit studies. Options involving sampling methodology and methods of administering the questionnaire that would have generated an acceptable …

Evaluation Of Bike Boxes At Signalized Intersections, Jennifer Dill, Christopher M. Monsere, Nathan Mcneil

Urban Studies and Planning Faculty Publications and Presentations

This report presents a before-after study of bike boxes at 10 signalized intersections in Portland, Oregon. The bike boxes, also known as advanced stop lines or advanced stop boxes, were installed to increase visibility of cyclists and reduce conflicts between motor vehicle and cyclists, particularly in potential ?right-hook? situations. Before and after video were analyzed for seven intersections with green bike boxes, three intersections with uncolored bike boxes, and two control intersections. User perceptions were measured through surveys of cyclists passing through five of the bike box intersections and of motorists working downtown, where the boxes were concentrated. Both the …

2011-2012 Unlv Mcnair Journal, Cyndy Anang, Sajar Camara, Pamela Cornejo, Carla Antonieta Farcello, Ilse Anahi Garcia, Natiera Magnuson, William L. Mccurdy, Lorena Munoz, Maxym V. Myroshnychenko, Ricardo Rios, Theodore Waldeck, Barbara Wallen, Ana Zuniga, Brenda M. Aguilar, Tiffany Alexandra Alvarez, Daniel N. Erosa, Paige C. Espinosa, Carla Antonieta Farcello, Julienne Jochel Paraiso, Nathaniel Derek Phillipps, Carmen Vallin, Jacent N. Wamala, Ernesto Zamora-Ramos

McNair Journal

Journal articles based on research conducted by undergraduate students in the McNair Scholars Program

Table of Contents

Biography of Dr. Ronald E. McNair

Statements:

Dr. Neal J. Smatresk, UNLV President

Dr. Juanita P. Fain, Vice President of Student Affairs

Dr. William W. Sullivan, Associate Vice President for Retention and Outreach

Mr. Keith Rogers, Deputy Executive Director of the Center for Academic Enrichment and Outreach

McNair Scholars Institute Staff

Longfellow Bridge Task Force Process Evaluation Report, Susan Jeghelian, Madhawa Palihapitiya

Massachusetts Office of Public Collaboration Publications

This report presents process evaluation findings and recommendations regarding the collaborative stakeholder process engaged in by the Longfellow Bridge Task Force, facilitated by the Massachusetts Office of Public Collaboration, and sponsored by the Massachusetts Department of Transportation under its bridge rehabilitation and restoration program. The purpose of the Task Force was to provide stakeholder and public input on the design of the Longfellow Bridge span cross-section, with particular focus on serving transit, roadway, bicycle and pedestrian needs effectively and safely.

Selection Of Source And Use Of Traffic Information In Emergency Situations, R. Michael Robinson, Asad Khattak

VMASC Publications

The access and the use of advanced traveler information systems (ATISs) by drivers during normal commuting have been extensively assessed and analyzed. Emergency managers and transportation officials have extended the results of studies of ATIS use under routine conditions to emergency scenarios under the assumption that drivers' responses to information under emergency conditions mimic those seen under normal driving conditions. A recent survey of potential hurricane evacuees suggests the need to revisit this assumption. Results indicate that although commercial radio reports and variable message signs continue to be the sources of traffic information cited the most frequently, other information sources …

Risk Factors For Driving Cessation Vary By Race And Ethnicity, Elizabeth Dugan, Frank Porell, Chae Man Lee

Gerontology Institute Publications

Driving is related to our identity and independence as well as allowing us to get needed goods, services, and social opportunities that enrich daily life. Yet with increasing age, the risk for developing threats to medical fitness to drive increases. Driving cessation is related to a long list of negative outcomes, such as: depression, social isolation, diminished access to health care, and diminished quality of life. We investigated risks for driving cessation, paying close attention to racial differences. This study used data from the Health and Retirement Study (HRS), 1998-2008. The study included N=46, 528 older people (age 65 and …

Five Years Later: Emergency Preparedness Improvements In New Orleans, Louisiana Since Hurricane Katrina, Evacuteer.Org, Uno/Lsu Gulf Coast Center For Evacuation Transportation And Resiliency

UNOTI Publications

No abstract provided.

The Visport Project: Visualization Of Port Logistics, Petros J. Katsioloudis, Ginger S. Watson

STEMPS Faculty Publications

The article focuses on the introduction of Visualization in Port Logistics (VisPort) web-based tool project for the visualization of port careers and logistics in the U.S. It outlines the educational objectives of the project including the virtual reality experience associated with port operation, the multimedia environment for the learning of students, and the simulation of port logistics. It mentions that the scientific and technical visualization curriculum offered to students enhances the skills related to scientific and mathematical concepts as well as the experience on graphic techniques.

Highway Safety Investigation Manual For The Oregon Department Of Transportation, Karen Dixon, Christopher Monsere

Civil and Environmental Engineering Faculty Publications and Presentations

Across the state, region, and nation highway safety investigators have developed a wide variety of tools and techniques for highway safety investigation procedures. Analysis techniques can range from systematic evaluation approaches such as the Oregon Department of Transportation’s (ODOT’s) Safety Priority Index System (SPIS) down to specific localized safety assessment strategies. It is important to develop consistent methods for safety evaluations across Oregon to ensure that safety investigations are conducted in a similar manner. It is also important to develop a screening process for proper highway safety investigations and document the procedures used for this assessment.

The objective of this …

Evaluation And Recommendation Of Mix Design For Emulsion Stabilized Bases, Samuel Franco

Open Access Theses & Dissertations

Asphalt emulsion has been used for base material stabilization in a few TxDOT districts. Results from these practices were quite different. The initial performance of two projects on US287 constructed around 2000 in the Amarillo District has been found to be satisfactory. However, the Yoakum District has reported problems with asphalt emulsion for base work in a project on FM 237. The preliminary conclusion from these trials has been that asphalt emulsion may not perform well in the high humidity/high rainfall areas like east Texas. On the other hand, using calcium-based additives to stabilize base courses in road construction has …

Public Investment And Economic Growth In El Paso, Azucena Gonzalez Monzon

Open Access Theses & Dissertations

This research focuses on the impact from public capital stock on economic growth in El Paso, Texas. A time series analysis is used to gauge the dynamic relationship between public infrastructure and the productivity of this city's economy. An Error Correction model and a Vector Error Correction model are utilized to discover short-run and long-run impacts from public capital stock on the growth of this particular economy. The Vector Autoregressive model is used to determine causality amongst the variables and to determine the structure of this economy. This research finds that public infrastructure growth actually follows economic growth and private …

Strategies To Improve And Preserve Flexible Pavements At Intersections, Imad N. Abdallah

Open Access Theses & Dissertations

Many rural intersections originally constructed with thin untreated flexible base and hot mix or a two-course surface treatment experience severe pushing, shoving and rutting. These failures cause an extremely rough surface that can cause damage to small vehicles and potentially cause motorists to lose control of their vehicle. These distresses almost always result in complete failure of the existing pavement that must be repaired several times during the life of the roadway by maintenance forces. Pavement sections constructed with the same materials adjacent to the intersection perform adequately until the approach (approximately 150 ft in advance) of the intersection and …

Methodology To Convert A Transportation Planning Origin-Destination Matrix Into A Microscopic Traffic Simulation Origin-Destination Matrix, Jose Osiris Vidana-Bencomo

Open Access Theses & Dissertations

Microscopic traffic simulation (MTS) is a cost-effective approach for the evaluation of traffic conditions in urban highways networks. In MTS models, traffic demand that is entered into the network is specified by one or several Origin-Destination (O-D) matrices. A major challenge in the application of MTS for large urban networks is the specification of the O-D matrices. This dissertation proposes a methodology that may be used to transform a O-D matrix from a transportation planning model (which is based on Traffic Analysis Zone, or TAZ, and is readily available) into a O-D matrix for a MTS model (which is traffic …

Transit In A Border Zone: The Demand For Public Transportation In Three Texas Border Cities, Adam Gregory Walke

Open Access Theses & Dissertations

Factors affecting the demand for public transportation include those, like fares or the level of service, that transit administrators can directly influence as well as those, like gasoline prices, that are beyond administrators' control. This study considers both but focuses on the latter and, more specifically, on how proximity to an international border affects transit ridership. Pedestrian border crossings have a significant effect on ridership levels in El Paso, Brownsville, and Laredo, Texas. Also, ridership correlates positively with the purchasing power of the peso in Laredo and with Mexico's industrial production index in El Paso. In the context of prior …

Network Effect Of Dynamic Routing Of Commerical Traffic Through Ports Of Entry, Alfredo Sanchez

Open Access Theses & Dissertations

The City of El Paso, TX has access to six ports of entry (POE) between the United States and Mexico in the region. Two of the four POEs within the El Paso City limits allow access to commerical traffic. The objective of this thesis is to see the effect on the El Paso transportation network of shifting all commercial traffic from Bridge of the Americas (BOTA) to Ysleta-Zaragoza and Santa Teresa POEs. DynusT, a dynamic routing traffic simulation tool, was used to make this determination.

Evaluation Of The Iqa Delay Estimation Method, Yaye Keita, Mitsuru Saito

CUTR Faculty Journal Publications

The Incremental Queue Accumulation (IQA) method is the new delay estimation method for signalized intersections adopted for the Highway Capacity Manual 2010. Using a signalized intersection and a remote data collection facility, the IQA method was evaluated for its accuracy and for potential challenges that practitioners may encounter as they use the new method. The results were compared with delays obtained by the delay estimation models included in the Highway Capacity Manual 2000. It was found that the IQA method was promising and theoretically more robust than the current delay estimation model, but field data collection could be challenging. © …

Real-Time Traffic Estimation Using Data Expansion, Roger Lederman, Laura Wynter

Research Collection School Of Computing and Information Systems

This paper presents a method for estimating missing real-time traffic volumes on a road network using both historical and real-time traffic data. The method was developed to address urban transportation networks where a non-negligible subset of the network links do not have real-time link volumes, and where that data is needed to populate other real-time traffic analytics. Computation is split between an offline calibration and a real-time estimation phase. The offline phase determines link-to-link splitting probabilities for traffic flow propagation that are subsequently used in real-time estimation. The real-time procedure uses current traffic data and is efficient enough to scale …

Grocery Shopping: How Individuals And Built Environments Influence Choice Of Travel Mode, Junfeng Jiao, Anne Vernez Moudon, Adam Drewnowski

Research Collection College of Integrative Studies

This research investigated the influences of socioeconomic characteristics of individual travelers and of the environments where the travelers live and shop on choice of travel mode for grocery shopping. The data on travel for grocery shopping came from 2,001 respondents to the 2009 Seattle Obesity Study survey in King County, Washington. Eighty-eight percent of the respondents drove to their grocery stores, whereas 12% used transit or taxis, walked, biked, or carpooled. The addresses of 1,994 homes and 1,901 primary grocery stores used by respondents were geographically coded. The characteristics of built environments in the neighborhoods around homes and grocery stores …

Real-Time Road Traffic Prediction With Spatio-Temporal Correlations, Wanli Min, Laura Wynter

Research Collection School Of Computing and Information Systems

Real-time road traffic prediction is a fundamental capability needed to make use of advanced, smart transportation technologies. Both from the point of view of network operators as well as from the point of view of travelers wishing real-time route guidance, accurate short-term traffic prediction is a necessary first step. While techniques for short-term traffic prediction have existed for some time, emerging smart transportation technologies require the traffic prediction capability to be both fast and scalable to full urban networks. We present a method that has proven to be able to meet this challenge. The method presented provides predictions of speed …