2001 ... Tejas Mehta, Hani S. Mahmassani and Chandra Bhat · This report provides an overview of the various methodologies for assessing the impacts of Intelligent Transportation Systems (ITS) on the environment. The report also discusses the general ITS evaluation framework and the issues that are important in assessing
4197-2 [CTR] ... FHWA/TX-02/ 4197-2
Full-text Link: http://www.utexas.edu/research/ctr/pdf_reports/4197_2.pdf
______________________________________________________________________________________________________ Methodologies for Evaluating Environmental Benefits of Intelligent Transportation Systems3.
2001 ... Tejas Mehta, Hani S. Mahmassani and Chandra R. Bhat · This report provides an overview of the current state of practice in evaluation of air quality impacts and also in emissions modeling. This report also describes the recent developments in emissions modeling. The air quality impacts of various ITS strategies and technology
2005 ... William H. Asquith, Meghan C. Roussel, David B. Thompson, Theodore G. Cleveland, and Xing Fang; Sponsored by the Texas Department of Transportation · Hyetographs and storm depth distributions are important elements of hydraulic design by Texas Department of Transportation engineers. Design hyetographs are used in
4194-4 [CTR] ... Report 0-4194-4
Full-text Link: http://library.ctr.utexas.edu/pdf1/4194-4.pdf
______________________________________________________________________________________________________ Definition of the "Cradle-to-Grave" Pavement Management Process5.
2005 ... Zhanmin Zhang [and three others] · The highway transportation system is vital to the mobility of goods and people in Texas. Pavements are an important component of the highway transportation infrastructure, accounting for the single largest share of the overall investment in highway infrastructure. Because of the large
2004 ... Zhanmin Zhang, Randy B. Machemehl, and Zach Piepmeyer · Research Report 0-4186-3 provides the details of the comprehensive plan developed under Project 0-4186. Each report on this CD-ROM is available as a PDF or .DOC. | The objective of pavement management is to maintain or improve the condition of the pavement
2003 ... Ampol Karoonsoontawong, Zhanmin Zhang and Randy B. Machemehl · Research Project 0-4186 entitled, "Cradle-to-Grave Monitoring of Pavements and Pavement Management Information System (PMIS) Functionality Enhancement Planning," is intended to develop strategic plans for integrating the pavement-related databases at
4186-2 [CTR] ... 0-4186-2
Full-text Link: http://www.utexas.edu/research/ctr/pdf_reports/0_4186_2.pdf
______________________________________________________________________________________________________ A Workplan for the Enhancement of the TxDOT PMIS8.
2001 ... Zhanmin Zhang, Randy B. Machemehl and Roger Smith · The current pavement-related database and information systems used by the Texas Department of Transportation (TxDOT) were developed decades ago. Although these systems serve their original purposes, significant improvements have to be made to meet the
2006 ... Yetkin Yildirim and Kenneth H. Stokoe II · This project was conducted to determine the correlation of field performance to Hamburg Wheel Tracking Device (HWTD) testing results. The HWTD measures the combined effects of rutting and moisture damage by rolling a steel wheel across the surface of an asphalt concrete specimen that is
2006 ... Yetkin Yildirim [and three others] · This project was conducted to determine the correlation of field performance to Hamburg Wheel Tracking Device (HWTD) testing results. The HWTD measures the combined effects of rutting and moisture damage by rolling a steel wheel across the surface of an asphalt concrete specimen that is
2006 ... Yetkin Yildirim [and four others] · This project was conducted to determine the correlation of field performance to Hamburg Wheel Tracking Device (HWTD) testing results. HWTD measures the combined effects of rutting and moisture damage by rolling a steel wheel across the surface of an asphalt concrete specimen that is
2002 ... Yetkin Yidirim and Thomas W. Kennedy · This project was conducted to determine the correlation of field performance to Hamburg Wheel Tracking Device (HWTD) testing results. HWTD measures the combined effects of rutting and moisture damage by rolling a steel wheel across the surface of an asphalt concrete specimen that is
2003 ... Yetkin Yildirim and Thomas Kennedy · A 5-year research project was sponsored by the Texas Department of Transportation (TxDOT) to evaluate the laboratory-field correlation for the Hamburg Wheel Tracking Device (HWTD) equipment. This equipment measures the combined effects of rutting and moisture damage by rolling a
2003 ... Mark T. Koenigs [and three others] · Changes in the AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals and an increasing rate of fatigue related problems have raised awareness of fatigue concerns in traffic signal mast arms. Prior research has indicated that the most
2005 ... Amanda A. Palmatier and Karl H. Frank · Traffic signal mast arm baseplate connections are particularly susceptible to fatigue. The top of traffic signal mast arm welds experience fluctuating tensile stresses when wind and traffic gust loads cause the mast arm to oscillate. It has been postulated that UIT application to mast arm weld toes
2005 ... Amanda H. Palmatier and Karl H. Frank · The application of Ultrasonic Impact Treatment (UIT) to signal mast arms in the field is described. UIT has been demonstrated in the laboratory to provide a simple means to improve the fatigue performance of the fillet weld of connection of the mast arm tube to the end plate. The
2005 ... Karl H. Frank and Amanda H. Palmatier · The report describes a limited fatigue study to determine the influence of a repair using a melted solder to repair the galvanized coating after treatment of a mast arm weld toe by Ultrasonic Impact Treatment. The test results indicated that heating of the mast arm to melt the solder reduced
2004 ... Joseph Spadea and Karl Frank · Presently, wrapping of the welds at the ends of stiffeners is not done to avoid the undercutting of the stiffener corners and the attendant weld repair. The fatigue performance of stiffeners with under cuts was evaluated in a factorial design fatigue experiment. Undercuts at the flange edge and filling of
2006 ... Ellen M. Rathje [and seven others] · This report presents the results from an experimental program aimed at evaluating the use of the crushed concrete (CC) and recycled asphalt pavement (RAP) for use in mechanically stabilized earth (MSE) walls. Various properties of RAP and CC (strength, hydraulic conductivity, pull out resistance,
4177-3 [CTR] ... 0-4177-3
Full-text Link: http://www.utexas.edu/research/ctr/pdf_reports/0_4177_3.pdf
______________________________________________________________________________________________________ Recycled Asphalt Pavement and Crushed Backfill: Results from Initial Durability and Geotechnical Tests20.
2002 ... Ellen M. Rathje [and seven others] · This report describes research results from the second year of a three-year study focused on the use of recycled asphalt pavement (RAP) and crushed concrete (CC) as backfill for mechanically stabilized earth (MSE) walls. The objectives of the research project are reviewed. The compaction
2001 ... Ellen M. Rathje [and seven others] · This report describes research results from the first year of a three-year study focused on the use of recycled asphalt pavement (RAP) and crushed concrete (CC) as backfill for mechanically stabilized earth (MSE) walls. The design procedures for MSE walls are reviewed. The current Texas
4177-1 [CTR] ... FHWA/TX-0-4177-1
Full-text Link: http://www.utexas.edu/research/ctr/pdf_reports/4177_1.pdf
7.6 MB
______________________________________________________________________________________________________ Anchorage Requirements for Grouted Vertical-Duct Connectors in Precast Bent Cap Systems22.
2006 ... Francisco J. Brenes, Sharon L. Wood and Michael E. Kreger · Bridge projects constructed in Texas which utilize precast bent caps typically employ grouted vertical ducts in the cap-to-column connections. This type of connection is preferred due to the simple geometry and because the volume of grout needed to complete the
2002 ... Kara M. Kockelman [and three others] · Current and proposed Americans with Disabilities Act (ADA) guidelines offer no specific guidance on acceptable maximum cross slopes where constraints of reconstruction prohibit meeting the 2-percent maximum cross-slope requirement for new construction. Two types of sidewalk test-
2004 ... Jolanda Prozzi · This CDROM contains gathered rural data on a GIS platform · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
2004 ... Jolanda Prozzi and Rob Harrison · In 2002, the Texas Department of Transportation (TxDOT) contracted with the Center for Transportation Research (CTR) at The University of Texas at Austin and Texas Tech University to provide evidence of the truck volumes and pavement damage associated with major rural truck traffic
2006 ... Jolanda Prozzi, Jorge Prozzi and Robert Harrison · In 2002 the Texas Department of Transportation (TxDOT) contracted with the Center for Transportation Research (CTR) at The University of Texas at Austin and Texas Tech University to provide evidence of the truck volume and pavement damage associated with major rural
2003 ... Jolanda Prozzi, Runhua Guo, and Rob Harrison · In 2002 the Texas Department of Transportation (TxDOT) contracted with the Center for Transportation Research (CTR) at the University of Texas at Austin and Texas Tech University to provide evidence of the truck volume and pavement damage associated with major rural truck traffic
2004 ... Hani S. Mahmassani [and four others] · The implementation of Intelligent Transportation Systems (ITS) carries the promise of more efficient use of already existing transportation networks. Reliable speed estimation and timely incident detection reduces congestion on highways. The Inductive Loops Detectors (ILD) and Automated
2009 ... Amy Smith Barrett, Hyeong Kim, and Karl H. Frank · This report documents a field test to determine the stresses at areas where fatigue cracks had formed in the bridges. Two bridges were instrumented and subjected to controlled truck traffic. In addition, the service fatigue stresses were evaluated by monitoring the stresses for a 1
2009 ... Gunup Kwon, Richard Klingner and Michael Engelhardt · This project was an implementation of research conducted under TxDOT Research Project 0-4124 on the use of post-installed shear connectors to develop composite action in existing non-composite steel bridge girder systems. In this implementation study, an existing
4124-01-1 [CTR] ... FHWA/TX-09/5-4124-01-1
Full-text Link: http://www.utexas.edu/research/ctr/pdf_reports/5_4124_01_1.pdf
______________________________________________________________________________________________________ Strengthening Existing Non-Composite Steel Bridge Girders Using Post-Installed Shear Connectors31.
2007 ... Gunup Kwon [and six others] · This study investigated methods to strengthen existing non-composite steel bridge girders by the development of composite action between the steel girder and concrete slab. More specifically, the objective of this study was to identify structurally efficient and practical ways to post-install shear
2003 ... Kevin Folliard [and four others] · In the United States, restrained shrinkage cracking of concrete bridge decks is a significant durability problem. The issues affecting restrained shrinkage cracking arise from design and construction practices, as well as material properties. The mechanisms of drying, autogenous, and carbonation
2008 ... Concrete Durability Center (CDC) · Printout of PowerPoint Slides from the Concrete Durability Center (CDC) workshop: | Session 1: Introduction and Workshop Objectives; Session 2: Fundamentals of Concrete; Session 3: Alkali-Silica Reaction; Session 4: TxDOT Experience with ASR; Session 5: Freezing and Thawing;
2001 ... Michael D. Brown [and three others] · In the United States, restrained shrinkage cracking is a significant durability problem. The issues affecting restrained shrinkage cracking arise from design and construction practices, as well as material properties. The mechanisms of drying, autogenous, and carbonation shrinkage are presented
2007 ... Sharon L. Wood and Peter K. Dean · Two fracture critical bridges were instrumented using miniature, battery-powered data acquisition systems as part of this investigation. The measured rainflow response was then used to estimate the remaining fatigue life of each bridge. The primary advantages of the monitoring system are
2004 ... C.T. Bilich and S.L. Wood · Two monitoring systems for bridges were evaluated for use by the Texas Department of Transportation. The first system was designed to increase the quantitative information obtained during a routine inspection of a steel bridge. The miniature, battery-powered data acquisition system selected for
2004 ... Alfredo Castro [and four others] · A research program was conducted in Ferguson Structural Engineering Laboratory at The University of Texas at Austin to determine whether elevated concrete stresses at extreme flexural fibers, relative to current allowable stresses, can be applied to pretensioned concrete beams at transfer. A
2006 ... Kevin Folliard · This product is intended to provide guidance to the Texas Department of Transportation (TxDOT) on the type of data that should be collected for new concrete structures and pavements. The information provided herein is based on research performed under TxDOT Project 0-4085, “Preventing Alkali-Silica Reaction
2006 ... Kevin J. Folliard [and ten others] · The state of Texas has been widely impacted by materials-related distress in various transportation structures. This distress has been mainly attributed to alkali-silica reaction (ASR) and delayed ettringite formation (DEF) and has been commonly referred to by the Texas Department of
2006 ... Stacy Bauer, Brian Cornell, David Figurski, Tyler Ley, Jorge Miralles, and Dr. Kevin Folliard · Recently in Texas, there has been significant damage of field structures resulting from concrete durability problems. Alkali-silica reaction (ASR) and delayed ettringite formation (DEF), or combinations of the two, have been found to be the main
2004 ... Robert Harrison, John McCray, Russell Henk, and Jolanda Prozzi · Inland ports are now being proposed as elements of national and international trade transportation corridors, logistic systems, and new security processes. This guide is intended to inform those proposing or supporting the development of inland ports in Texas of the role
2002 ... Jolanda Prozzi [and three others] · The consideration of multi-modal inland ports to enhance trade corridor performance and improve the efficiency of global supply chains is starting to emerge in the transportation community Ultimately, it is believed that inland ports have the capability to create local employment, enhance
2006 ... Robert Harrison [and three others] · 5-4083-01-P1: Implementation Manual outlining procedures for evaluating a sponsor’s inland port proposal and providing guidance for scoring and evaluating proposals. Proposals have been split into two time-frames to ensure scoring reflects the type of facility being proposed i.e. (i) when a new
2005 ... Robert Harrison, Lisa Loftus-Otway and Ajay Shakyaver · In the year 2000 the Texas Department of Transportation (TxDOT) commissioned a research project (0-4083) on the growth of inland ports along transportation corridors in Texas and the United States. This project was staffed by a multi-institutional team
2002 ... Sara Jean Leitner and Robert Harrison · This report presents a formal definition for inland ports and creates a classification methodology to promote familiarity with inland port operations and aid transportation planners interested in supporting inland port operations. Inland ports are sites away from traditional borders where
2007 ... C.R. Bhat [and six others] · The "Comprehensive Econometric Micro-simulator for Daily Activity-Travel Patterns" (CEMDAP) is a software implementation of a system of econometric models that represent the decision-making behavior of individuals. It is one of the first systems to comprehensively simulate the activity-travel
2001 ... Chandra R. Bhat, Sivaramakrishnan Srinivasan and Jessica Guo · The goal of this project is to comprehensively model the activity-travel patterns of workers as well as non-workers in a household. The activity-travel system will take as input various land use, socio-demographic, activity system, and transportation level-or-
4080-2 [CTR] ... FHWA/TX-0-4080-2
Full-text Link: http://www.utexas.edu/research/ctr/pdf_reports/4080_2.pdf
557.4 KB
______________________________________________________________________________________________________ Representation and Analysis Plan and Data Needs Analysis for the Activity-Travel System52.
2001 ... J.Y Guo and Chandra R. Bhat · This research aims to advance the state of the art in daily activity-travel modeling. It represents one of the first attempts to comprehensively model the activity-travel patterns of workers as well as non-workers in a household. The activity-travel system will take as input various land-use, socio-
2006 ... Kara Kockelman [and four others] · This guide will demonstrate how to use the ROW Estimating Tool developed in TxDOT Project 5-4079. · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
2006 ... Kara Kockelman [and four others] · This document is the user manual for the Right-of-Way (ROW) Acquisition Cost Estimating Planning Tool developed to help appraisers evaluate and analyze ROW acquisition costs. This tool is an interface between a set of regression equations and the users. It can also help manage the ROW
2006 ... Kara Kockelman [and four others] · Right-of-way (R/W) acquisitions can be a significant component of a project?s total cost. When owners reject the compensation offered for their properties as insufficient, the project comes to a halt until an agreement can be reached and increased funding can be obtained. Moreover, the process
2004 ... Kara M. Kockelman [and three others] · Right-of-Way (ROW) acquisition for highways and other transportation improvements can be very expensive, time-consuming, and socially sensitive. Accurate ROW cost estimation, efficient acquisition practices, and appropriate federal and/or state laws can be keys to successful
4079-1 [CTR] ... 0-4079-1
Full-text Link: http://www.utexas.edu/research/ctr/pdf_reports/0_4079_1.pdf
______________________________________________________________________________________________________ Procedure Illustration: Excel Spreadsheet for Table 19 of Report TX-03/4073-157.
2005 ... Fengxiang G. Qiao, Lei Yu and Linhua Li · Contains a Table 19 "Microscopic Emission Calculation Worksheet" and Background Data Sheet. I-45 North Northbound at ALLEN PARKWAY · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
2005 ... Amy E. Eskridge [and three others] · This report is a synthesis of the technical results of Texas Department of Transportation Study 4069 ("Mitigation Techniques for In-Service Structures with Premature Concrete Deterioration"). The Texas Department of Transportation is interested in developing techniques for
2004 ... Amy E. Eskridge [and three others] · This report describes part of the work associated with Texas Department of Transportation Project 0-4069 (“Mitigation Techniques for In-Service Structures with Premature Concrete Deterioration”). The Texas Department of Transportation is interested in developing techniques for
2006 ... Yetkin Yildirim, Ahmed Qatan and Jorge Prozzi · This field manual was developed as a product of research project 4061 “Comparison of Hot Poured Crack Sealant to Emulsified Asphalt Crack Sealant” conducted by The University of Texas at Austin Center for Transportation Research (CTR). Organization of this field manual
2004 ... by Yetkin Yildirim · Video showing proper method of installing different crack sealants. · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
2006 ... Jorge Prozzi, Armagan Korkmaz and Yetkin Yildirim · This is the final report from the Center for Transportation Research on Project 4061. It presents the results, findings, conclusions, and recommendations based on the surveys, lab tests, and information collected on test sections for the 4-year study. Sealing and filling
2002 ... Yetkin Yildirim, Ahmed Qatan and Thomas W. Kennedy · This is the second report from the Center for Transportation Research on the Project 4061. It presents the results, findings, conclusions, and recommendations based on the field surveys of the test sections for the second year of a 3-year study. This study comes as an
2004 ... Yetkin Yildirim, Mansour Solaimanian and Thomas W. Kennedy · This is the first report from Center for Transportation Research on the Project 4061. It presents the results, findings, conclusions, and recommendations based on the surveys, lab tests, and information collected on test sections for the first year of a 3 year study.
4061-1 [CTR] ... 0-4061-1
Full-text Link: http://www.utexas.edu/research/ctr/pdf_reports/0_4061_1.pdf
______________________________________________________________________________________________________ Multi-Modal Analysis Freight Tool (MAFT)66.
2006 ... Patricia C. Delgado [and three others] · "MAFT is a sketch planning tool that will help you quantify and evaluate benefits associated with freight modal investments" · "MAFT Template" · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
2004 ... Jolanda Prozzi, Claudia Patricia Delgado and C. Michael Walton · In 1991, with the passage of the Intermodal Surface Transportation Efficiency Act (ISTEA), the U.S. Congress established the objective to develop a national intermodal system to move people and goods efficiently. In the freight sector, exclusive truck roads,
2000 ... David L. Luskin [and four others] · A complex web of government regulations in the United States establishes maximum weights for vehicles on public roads. The primary purpose is to ensure compatibility of roadway design and operations with vehicle weight and dimensions. Of particular concern are the roadway impacts
2004 ... Dr. Cesar I. Medina-Chavez · This CDROM was developed in compliance with TxDOT Research Project 0-4035 Task 10.5. The material contained here intends to serve as a guide for pavement engineers to learn about the procedure followed in this project to design a post-tensioned prestressed concrete pavement (PCP). · Publ. by:
2004 ... B. Frank McCullough and Cesar Ivan Medina Chavez · This is the third technical report prepared for the Texas Department of Transportation (TxDOT) Project 0-4035 "Further Development of Post-Tensioned Prestressed Concrete Pavements in Texas." The contents of this document intend to complement the information provided in
2004 ... David Fowler [and three others] · Prestressed concrete pavements have proved to be extremely cost efficient, to require less maintenance compared with other pavement types, and are now being widely used for both highways and airport runways. In prior research relating to prestressed concrete pavements, the various
2005 ... Cesar Medina and Moon Won · The design and construction of prestressed concrete pavement (PCP) are not common tasks in the pavement industry. However, the promising performance of PCP has raised its support from highway agencies in the last few years. The next step for the full acceptance of PCP is to demonstrate its cost-
2005 ... Moon Won and Cesar Ivan Medina-Chavez · The design and construction of prestressed concrete pavement (PCP) are not common tasks in the pavement industry. However, the promising performance of PCP has raised its support from highway agencies in the last few years. The next step for the full acceptance of PCP is to
2003 ... Cesar Ivan Medina Chavez, B. Frank McCullough, David W. Fowler · Prestressed Concrete Pavement (PCP) has been around for almost 60 years. Its application started in Europe in the 1940s, and since then it has been applied with fair success in other countries, including the United States. Domestic application of this
2003 ... Alexei Tsyganov, Randy Machemehl and Rob Harrison · During the past several years, the continuous industrial development in Texas, as well as the North American Free Trade Agreement (NAFTA), led to a population increase and a significant growth of freight movements through Texas. This caused an overload of the existing
4021-3 [CTR] ... FHWA/TX-03/4021-3
Full-text Link: http://www.utexas.edu/research/ctr/pdf_reports/4021_3.pdf
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