UNT Libraries Government Documents Department - 53 Matching Results

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Algorithms for routing vehicles and their application to the paratransit vehicle scheduling problem

Description: "As the demand for paratransit services increases, there is a constant pressure to maintain the quality of service provided to the customers while minimizing the cost of operation: this is especially important as the availability of public funding for paratransit services has been on the decline. Key tasks in accomplishing this objective are efficiently allocating vehicles to service trips and adjusting the schedules of vehicles dynamically in response to calls received by the service providers from the customers on the day of the service."
Date: March 2012
Creator: Park, Myoungkuk; Oberlin, Paul; Rathinam, Sivakumar; Quadrifoglio, Luca & Darbha, Swaroop

Use of performance measurement to include air quality and energy into mileage-based user fees

Description: "This research project is aimed at establishing a framework for levying MBUFs designed to achieve various air quality improvement policy objectives. This research presents the first step toward a pricing framework based on the concept of performance measurement that systematically defines and incorporates potential air quality goals. The process of developing the proposed framework included defining the interactive role of user fees and pricing in roadway transportation operations and identifying air quality performance measures for determining the appropriate vehicle mileage fee price."
Date: March 2012
Creator: Farzaneh, Reza; Novak, Kristen; Baker, Richard T. & Goodin, Ginger

The Short-Run Impact of Gas Prices on Toll Road Use

Description: One of the primary functions of transportation planning is to predict future travel behavior. Using estimated travel patterns, planners can then help decision makers select the array of projects that will best suit the needs of their community. Travel behavior is a function of many variables, with cost being among the most important. Recent fluctuations in the price of gas provide an excellent opportunity to observe the impact of the price of gas on travel behavior. This project goes a step beyond looking at the elasticity of travel with respect to gas price by examining how recent changes in gas prices have impacted travel on specific facilities: toll facilities. Data from around the US was used to examine how traffic levels on toll roads have been affected by fluctuations in gas prices over the last several years. This study developed models that account for the many other exogenous factors influencing toll road use (such as local economy, population, and toll rates), and provide an elasticity of toll road demand with respect to gas price independent of those other factors. This study will provide planners and toll road authorities with valuable information on how travelers react to increasing cost of travel when already selecting a mode with an added cost (the toll). The research findings indicated that travel demand elasticity estimates with respect to gas price were inelastic and mostly negative. Elasticities found here for the period from 2000 to 2010 ranged from -0.36 to +0.14, similar to those found in the literature for non-toll facilities. However, the average value of the elasticities found here were much smaller (closer to -0.06) than those found for non-toll facilities.
Date: September 2011
Creator: Burris, Mark & Huang, Chao

Transit management certificate program

Description: "In this report Texas Transportation Institute(TTI) worked closely with the Landscape Architecture and Urban Planning Department (LAUP) of Texas A&M University (TAMU) to develop a transit management certificate focus for the current Graduate Certificate in Transportation Planning (CTP) housed in the College of Architecture at TAMU. This program is the first step in the development of future educational opportunities in public transportation in Texas."
Date: July 2012
Creator: Cherrington, Linda; Sandidge, Matt & Joh, Ken

Creating the next generation of transportation professionals

Description: The transportation industry, like every other profession that relies heavily on the science, technology, engineering, and mathematics (STEM) fields, faces a growing shortage of professional engineers. The purpose of this project was to investigate new methods for conducting educational outreach activities for kindergarten through twelfth grade (K-12) students and compare the effectiveness of various implementation methods. During this project, Texas Transportation Institute (TTI) researchers developed two in-class educational outreach modules and several displays that they could easily transport and exhibit at various educational outreach activities. The first in-class module introduces intermediate school students to the world of transportation and transportation engineering and teaches students about the principle of retroreflectivity. The second in-class module teaches kindergarten students about sign shapes and colors. TTI researchers also participated in 12 educational outreach activities. These activities included: Four in-school events, four field trips to TTI facilities, three summer activities, and one engineering day event. The students participating in these activities ranged from kindergarten to twelfth grade. The educational outreach activities conducted introduced the fields of transportation and engineering to over 2000 students.
Date: November 2011
Creator: Finley, Melisa D. & Jasek, Debbie

Multi-vehicle mobility allowance shuttle transit (MAST) system: an analytical model to select the fleet size and a scheduling heuristic

Description: This report discusses the mobility allowance shuttle transit (MAST) system which is a hybrid transit system in which vehicles are allowed to deviate from a fixed rout to serve flexible demand. The mixed interfere programming (MIP) formulation analyzed the impacts of time headways between consecutive transit vehicles on the performance of a two-vehicle MAST system. An analytical framework is then developed to model the performance of both one-vehicle and two-vehicle MAST systems, which is used to identify the critical demand level at which an increase of the fleet size from one to two vehicles would be appropriate. From this research an insertion heuristic for a multi-vehicle MAST system was developed.
Date: June 2012
Creator: Quadrifoglio, Luca & Lu, Wei

Development of statistical models to forecast crossing times of commercial vehicles

Description: In this report statistical models were developed to predict crossing times of trucks over a short range of time. The statistical prediction models use historic data and take into account empirical relationships between border-crossing-related parameters and truck crossing times.
Date: July 2011
Creator: Kang, Dong Hun; Ochoa, Cesar; Rajbhandari, Rajat & Garcia, Francisco

Evaluating the use of transfers for improving rural public transportation systems

Description: "In this report researchers consider a variation of the regular demand responsive transit system that adopts the transfer practice to reduce operating costs.Researchers evaluated the effect of different transfer operating policies by developing a simulation model of several plausible scenarios. The results indicate that zoning with transfer can provide significant benefits paratransit operations that are managing zoning structure."
Date: August 2011
Creator: Quadrifoglio, Luca; Shen, Chung-Wei & Edrington, Suzie

The value of public transportation for improving the quality of life for the rural elderly

Description: "This report focuses on non-medical transportation; medical transportation is addressed in the literature and is more widely available to the elderly. Because expanded rural transportation systems likely will be funded by taxpayers, an understanding of their preferences and willingness-to-pay for non-medical transportation options is essential."
Date: July 2012
Creator: Mjelde, James W.; Dudensing, Rebekka; Cherrington, Linda Kay; Yanhong, Jin; Israel, Alicia A. & Chen, Junyi

The 2011 Mileage-Based User Fee Symposium

Description: The fuel tax is rapidly losing its ability to support system needs. Federal environmental regulations and the escalating price of fossil fuels have created a strong incentive to develop and utilize more fuel-efficient vehicles, which will drive down fuel tax revenues relative to use of the nation's roadway network. Given the challenges associated with the declining sustainability of the fuel tax, the likely successor is a road user fee largely based on actual usage. This project sponsored the third annual two-day Symposium on Mileage-Based User Fees that brought together professionals in the field of mileage-based fees for the purpose of sharing information on current applications and exploring their potential as a supplement or replacement for the fuel tax.
Date: September 2011
Creator: Goodin, Ginger & Wood, Nicholas

Developing an interdisciplinary certificate program in transportation planning. Phase 2, The eCertificate: final report

Description: This proposal extends the delivery of the recently developed graduate Certificate in Transportation Planning to a wider audience through the establishment of an Executive Certificate Program by distance (eCertificate). While the need for an interdisciplinary approach to transportation is widely recognized by the professional community, there are few educational programs that address the field of transportation in a truly comprehensive, interdisciplinary manner. Texas A&M University's (TAMU's) university-wide graduate Certificate in Transportation Planning was established in August 2008 to address this need. This program has proved to be very successful. A limitation of the existing certificate program is that it is available only to graduate students at TAMU in College Station. The eCertificate program extends the delivery of the existing certificate to a wider audience of professionals interested in transportation in selected metropolitan areas in Texas. Preliminary indications suggest that an audience for the certificate exists in major metropolitan areas in Texas, especially Austin, Dallas, Houston, and San Antonio. The certificate will increase access, expand Texas A&M's transportation curriculum, and enhance the university's position as a national leader in transportation education.
Date: November 2011
Creator: Ndubisi, Forster & Dumbaugh, Eric

Statistical analysis of vessel waiting time and lockage times on the upper Mississippi River

Description: "The purpose of this report is to identify and evaluate non-structural alternatives those not requiring construction, but rather procedural or policy changes, for instance, congestion fee, excess lockage time charges, helper boats, switch boats, deck winches, and moorings that might be employed to offer nearby congestion relief."
Date: September 2011
Creator: Wu, Ximing; Chang, Meng-Shiuh; Fuller, Steven & Zhang, Yu Yvette

Examining challenges, opportunities, and best practices for addressing rural mobility and economic development under SAFETEA-LU's coordinated planning and human services framework

Description: This report evaluates the recently developed coordinated transit and human services plan both the processes that have been adopted throughout the state as well as they types of outcomes that have emerged.
Date: July 2011
Creator: Martin, June; Giusti, Ceclia; Dumbaugh, Eric & Cherrington, Linda

Refining the real-timed Urban Mobility Report

Description: This report describes a methodological improvement in the Urban Mobility Report (UMR) arterial street congestion calculations, including a change in the definition of "free-flow speed," which is used for delay calculations on arterial streets.
Date: March 2012
Creator: Lomax, Tim; Turner, Shawn; Eisele, Bill; Schrank, David; Geng, Lauren & Shollar, Brian

Transportation and Tourism: Final Report

Description: Report exploring the link between transportation and tourism in Texas. A session on transit and tourism was organized and conducted as part of the 2012 Texas Transit Conference. Session participants discussed additional research needs, outreach activities, and possible demonstration projects.
Date: August 2012
Creator: Turnbull, Katherine F. & Griffin, Greg P.

Making mobility improvements a community asset: transportation improvements using context-sensitive solutions

Description: "This report was developed to disseminate knowledge, experiences, and reasons for use and benefits of Context-sensitive solutions (CSS) through university courses and technology transfer to facilitate its use by agencies and practitioners in gaining community acceptance of mobility improvement projects."
Date: September 2010
Creator: Bochner, Brian S.; Storey, Beverly & Lehnert, Angeline

Assessing the value of delay to truckers and carriers

Description: This project evaluates the value of delay (VOD) to commercial vehicle operators due to highway congestion. The VOD for congestion is a fundamental parameter driving the private sectors' response to public freight projects and policies such as corridor construction and tolling.
Date: June 2011
Creator: Miao, Qing; Wang, Bruce X. & Adams, Teresa M.

Teen driver cell phone blocker

Description: "In this report a study that was a randomized control intervention that measures the effectiveness of a cellular phone control device that communicates whit the vehicles of teen drivers to deny them access to their phone while driving for the purpose of reducing distraction=related negative driving events."
Date: February 2012
Creator: Benden, Mark; Fink, Rainer & Stafford, James