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An Assessment and Framework of Management Science Applications for TxDOT

Description: Report discussing the results of a project in which researchers implemented a systematic approach to identify the domains within the Texas Department of Transportation (TxDot) where Operations Research and Management Science (OR/MS) techniques could lead to substantial improvements.
Date: October 2011
Creator: Waller, S. Travis; Walewski, John; Chang, Carlos; Fajardo, David; Lasdon, Leon; Montes, Edith et al.

Traffic Operations and Safety Benefits of Active Traffic Strategies on TxDOT Freeways

Description: Report discussing a project, which developed a series of interdependent models and a simulation framework to evaluate the traffic operations and safety benefits of ATM strategies. Four ATM scenarios were evaluated in this study: variable speed limits (VSL), peak-period shoulder use, VSL and shoulder use, and ramp metering.
Date: October 2011
Creator: Nezamuddin, N.; Jiang, Nan (Writer on transportation); Zhang, Ti; Waller, S. Travis & Sun, Dazhi

Evaluation, presentation and repair of microbial acid-produced attack of concrete

Description: This report evaluates the severity of the deterioration in bridges to determine if microbial induced deterioration (MID) is a significant contributor by visual inspection and a number of tests on twelve selected columns. This report also evaluates the effectiveness of suggested test procedures on identifying microbial attack on concrete and the integrity of deteriorated concrete due to the attack.
Date: October 2011
Creator: Hu, Jiong; Hahn, Dittmar; Rudzinski, Walter; Wang, Zhuo & Estrada, Luzelva

CAM Mix Design With Local Aggregates

Description: "This study provides revised mix design recommendations for crack attenuating mixtures (CAM) with local aggregates. The use of lower quality aggregates is cost beneficial but limits the application of these mixes in terms of reduced performance. Aggregate guidelines and aggregate quality criteria are provided to enhance the rutting and cracking performance of these mixes. The mix design recommendations as well as aggregate guidelines and quality criteria provided in the report are based on la… more
Date: October 2011
Creator: Smit, Andrè de Fortier; Prasad, Sivaram; Prozzi, Jorge Alberto & Tahmoressi, Maghsoud

Implementing a project and portfolio management system for TxDOT project development

Description: "Beginning in the summer of 1999, Texas Department of Transportation (TxDOT) started developing the framework for implementing a sophisticated new system to manage its large and diverse portfolio of projects during their development phase. This was followed by the implementation itself for managing project schedules, project and portfolio resources and costs during their development cycle. This unique and challenging implementation across TxDOT encompassed all functional areas involved in the p… more
Date: October 2011
Creator: Khwaja, Nabeel

Continuous prestressed concrete girder bridges. Volume 1, Literature review and preliminary designs

Description: "The Texas Department of Transportation (TxDOT) is currently designing typical highway bridge structures as simply supported using standard precast, pretension-ed girders. TxDOT is interested in developing additional economical design alternatives for longer span bridges, through the use of the continuous precast, pretension-ed concrete bridge structures that use spliced girder technology. The objectives of this portion of the study are to evaluate the current stat-of-the-art and practice relev… more
Date: October 2011
Creator: Mander, John B.; Parkar, Anagha S. & Hueste, Mary Beth D.

Developing a mixture design specification for flexible base construction

Description: "In the Texas Department of Transportation (TxDOT), flexible base producers typically generate large stockpiles of material exclusively for TxDOT projects. This large "state-only" inventory often maintained by producers, along with time requirements for testing and reduced manpower within TxDOT offices, resulted in this project's investigation into a mixture-design specification for flexible base. The goals of this project are to develop a flexible base specification that reduces TxDOT's burden… more
Date: October 2011
Creator: Epps, Jon A.; Sebesta, Stephen; Sahin, Hakan; Button, Joe; Luo, Rong & Lytton, Robert

Best Practice for Using RAS in HMA

Description: "The use of recycles asphalt shingles (RAS) in hot-mix asphalt (HMA) mixtures has the potential to significantly reduce the cost of asphalt paving mixes while conserving energy and preserving the environment. This report documents the best practices for the use of RAS in HMA in terms of Ras processing, characterizing the processed RAS (binder content,gradations, and performance grad [PG]), RAS mix design, production, and field construction."
Date: October 2011
Creator: Zhou, Fujie; Button, Joe W. & Epps, Jon

Impacts of energy developments on the Texas Transportation System infrastructure

Description: "Texas energy sector has a critical impact-historically and currently-on both the state economy and the Texas transportation system. The stat's various transportation modes, including rail, highways, pipelines, and ports, form a system that supports the energy sector in a number of ways."
Date: October 2011
Creator: Prozzi, Jolanda; Grebenschikov, Sergey; Banerjee, Ambarish & Prozzi, Jorge Alberto

Facilitating Creation of Transit System Technology User Groups

Description: "The purpose of this research was to inventory current technology applications and vendors by transit agency and to assess the current use(s) of these applications" (p. i).
Date: October 2010
Creator: Edrington, Suzie; Sandidge, Matthew & Arndt, Jeffrey C.

Characterization of Exhaust Emissions From Heavy-Duty Diesel Vehicles in the Houston-Galveston-Brazoria Area

Description: "For this study, a total of 30 heavy-duty diesel vehicles (HDDVs) were selected from City of Houston (COH) fleet based on opacity testing for HEs and random selection for non-HEs. With the selected 30 vehicles, driving and idling emission testing were performed to characterize their emissions with respect to vehicle classes, types (HE or non-HE), and model years."
Date: October 2011
Creator: Johnson, Jeremy D.; Lee, Doh-Won; Farzaneh, Reza; Zietsman, Josias & Yu, Lei

Unclaimed Property Reporting Instructions, 2011

Description: The General Information chapter gives an overview of unclaimed property reporting. The Property Specific Reporting chapter discusses, in detail, some of the more common types of unclaimed property. The Preparing Your Report chapter gives step-by-step instructions for completing the property report and includes sample forms and instructions. The last Chapter of the manual contains Reference Tales that will be helpful when preparing your reports. On the last page, you will find a quick reference… more
Date: October 2011
Creator: Texas. Comptroller's Office.

Texas Legislative Council Annual Financial Report: 2011

Description: Annual financial report of the Texas Legislative Council documenting income, expenditures, and other relevant financial information for fiscal year 2011.
Date: October 1, 2011
Creator: Texas. Legislature. Legislative Council.

Texas Department of Transportation Administration Research: Tasks Completed Fiscal Year 2011

Description: "This research project evaluates numerous transportation issues and develops findings and/or recommendations based on results. This project has been structured to address some of the emerging, critical, and unique considerations related to transportation."
Date: October 2011
Creator: Anderson, S. D.; Beaty, Curtis; Ding, Liang; Ellis, David; Epps, Jon; Estakhri, Cindy K. et al.

School Traffic Workshop: Dealing With Texas-Sized Problems Around Schools

Description: "This report summarized the series of "Traffic around Schools"" workshops conducted throughout the state of Texas to familiarize TxDOT employees and partner agencies with two key products from previous research projects (0-4286 and 0-5470) and other tools and guidance that are available for dealing with problems around schools."
Date: October 2011
Creator: Brewer, Marcus A.; Fitzpatrick, Kay & Cooner, Scott A.

Studies to determine the effectiveness of longitudinal channelizing devices in work zones

Description: "This report describes the methodology and results of analyses performed to determine whether the following longitudinal channelizing device (LCD) applications improve the traffic safety and operations of work zones relative to the use of standard drums."
Date: October 2010
Creator: Finley, Melisa D.; Theiss, LuAnn; Trout, Nada D.; Miles, Jeffrey D. & Nelson, Alicia A.
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