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Examining the Market Potential for Natural-Gas-Powered Trucks : Barriers and Opportunities for Promoting Environmental Sustainability and Economic Prosperity


2014 ... by Ryan Hazlett, Lauren Cresswell · Over the past decade, public concerns have grown over America’s energy use and production. Pushes towards more environmentally friendly and sustainable sources of energy have moved out of fringe politics and into mainstream political discourse. Advances in drilling technology and increased

2014-600451-00078-1 [CTR] ... SWUTC/14/600451-00078-1

Full-text Link:
1.6 MB

Fatigue and Fracture Properties of Aged Binders in the Context of Reclaimed Asphalt Mixes


2014 ... by Arash Motamed [and three others] · Evidence in the literature indicates that the stiffness of the asphalt binder increases and ductility of the binder decreases with oxidative aging. Typically for unmodified asphalt binders, increase in stiffness or decrease in ductility is regarded as detrimental to the fatigue cracking or fracture

2014-600451-00076-1 [CTR] ... SWUTC/14/600451-00076-1

Full-text Link:
1.4 MB

Productivity-based Approach to Valuation of Transportation Infrastructure


2014 ... by Diniece Peters and Zhanmin Zhang · Transportation infrastructure, a vital component to sustain economic prosperity, represents the largest public-owned infrastructure asset in the U.S. With over a trillion invested dollars invested into long-lived physical assets such as roads and bridges, transportation agencies are

2014-600451-00089-1 [CTR] ... SWUTC/14/600451-00089-1

Full-text Link:
2.3 MB

0-6723, Development of Rapid, Cement-Based Repair Materials for Transportation Structures


2014 ... Research Performed by: Center for Transportation Research; Research Supervisor: Kevin J. Folliard; Researchers: Mitchell Dornak [and three others] · "The state of Texas has been plagued by various durability-related issues in recent years, including deterioration from alkali-silica reaction, delayed ettringite formation,

6723 PSR [CTR] ... 0-6723 -S ... Project Summary

Full-text Link:


Conference/Workshop Presentation Materials


2014 ... Jung-Su Lee and Kenneth H. Stokoe II (CTR); Thomas Scullion (TTI); Joe Leidy and Edward Oshinski (TxDOT) · "Project No. 5-6005-01: Statewide Implementation of Total Pavement Acceptance Device (TPAD) is coming to completion. During the operating period of the TPAD (January 1, 2013 through August 31, 2014), the

6005-01-P4 [CTR] ... Product 5-6005-01-P4

Full-text Link:
3.3 MB

Data Collected on TPAD Implementation Projects


2014 ... Jung-Su Lee, Kenneth H. Stokoe II · "TPAD testing was conducted by CTR personnel at the following locations during TxDOT Project 5-6005-01: Statewide Implementation of Total Pavement Acceptance Device (TPAD) (January 2013 through August 2014): (1) San Marcos Airport, (2) IH 10 in El Paso (two tests conducted at this site),

6005-01-P3 [CTR] ... Product 5-6005-01-P3

Full-text Link:
5.5 MB

Work Plan for Establishing Test Platforms for New Transportation Systems


2014 ... Peter J. Jin [and five others] · "The Texas Technology Task Force (TTTF) reviewed the status and potential of autonomous vehicles (AV), connected vehicles (CV), electric vehicles (EV), and cloud computing (CC) and crowdsourcing technologies. The main objectives of TTTF is to make Texas the pioneering state in the research,

6803-P4 [CTR] ... Product 0-6803-P4

Full-text Link:
346 KB

Work Plan for Establishing a Public-Private Consortium for Technology Development


2014 ... Peter J. Jin [and five others] · · CONTENTS: 1. Background -- 2. Public-Private Consortium (PPC) -- 3. Existing Transportation Technology Development Program -- 4. Texas PPC Examples -- 5. Transportation Technology Development Stakeholders -- 6. Key Issues for Establishing a PPC -- 7. TTTF Work Plan for the PPC --

6803-P3 [CTR] ... Product 0-6803-P3

Full-text Link:
165 KB

Structural Monitoring of the World’s First Precast Network Arch Bridge during Construction


2014 ... Hossein Yousefpour, Todd Helwig, Oguzhan Bayrak · This report provides an overview of a monitoring study on the West 7th Street Bridge in Ft Worth, Texas, that was carried out by The University of Texas at Austin (UT). The West 7th Street Bridge was designed by the Texas Department of Transportation (TxDOT) and is believed

5253-03-1 [CTR] ... FHWA/TX-14/5-5253-03-1

Full-text Link:
12 MB

Revamping Aggregate Property Requirements for Portland Cement Concrete : Final Report


2014 ... J. Christopher Clement [and four others] · Current Texas Department of Transportation (TxDOT) procedures for evaluating coarse aggregate for portland cement concrete (PCC) have been in place for over 39 years. Item 421 in the TxDOT “Standard Specifications for Construction and Maintenance of Highways, Streets, and

6617-1 [CTR] ... FHWA/TX-13/0-6617-1

Full-text Link:
15.2 MB

Revised Pay Adjustment Factors for HMA and Concrete Pavements


2014 ... Prasad Buddhavarapu [and four others] · The current pay adjustment system for HMA production, placement, and ride consistently rewards contractors, but does not necessarily result in improved performance of constructed HMA pavements and longer service life. The current system needs to be changed in order to improve

6675-1 [CTR] ... FHWA/TX-14/0-6675-1

Full-text Link:
3.1 MB

Water Quality and Hydraulic Performance of Permeable Friction Course on Curbed Sections of Highways


2014 ... Laura C. Sampson [and three others] · This paper presents the results of a study on the use of porous overlays on urban highways. Permeable friction course (PFC) is a layer of porous asphalt applied to the top of conventional asphalt highways at a thickness of around 50 mm. The first objective of the study was to determine the

6635-1 [CTR] ... FHWA/TX-14/0-6635-1

Full-text Link:
6.8 MB

Evaluation of the Benefits of Diamond Grinding of CRCP : Final Report


2014 ... Prasad Buddhavarapu [and three others] · This report outlines the testing and evaluation of a continuously reinforced concrete pavement (CRCP) on IH35W near Fort Worth rehabilitated using diamond grinding instead of applying an asphalt overlay to extend the serviceability of the old concrete pavement. Surface

9046-01-1 [CTR] ... FHWA/TX-13/5-9046-01-1

Full-text Link:
1.2 MB

Integrating Public and Private Data Sources for Freight Transportation Planning


2014 ... Dan Seedah [and ten others] · The Moving Ahead for Progress in the 21st Century Act (MAP-21) stipulates that state transportation agencies expand their interest in freight initiatives and modeling to support planning efforts, particularly the evaluation of current and future freight transportation capacity necessary to ensure

6697-CTR-1 [CTR] ... FHWA/TX-14/0-6697-CTR-1

Full-text Link:
4.7 MB

RTI Special Studies for TxDOT Administration in FY 2014


2014 ... Khali Persad [and eighteen others] · "Seven policy briefs were completed under [TxDOT Research Project 0-6581-CT,] Task 19, and were presented to TxDOT Administration and the new Executive Director. This report combines the policy briefs for easy reference. The seven policy briefs are presented individually in Volumes 1

6581-CT-7 [CTR] ... FHWA/TX-14 /0-6581-CT-7

Full-text Link:
11.1 MB

Work Plan for the Completion of Strategic Business Plan


2014 ... Peter J. Jin [and four others] · "After General Appropriations Bill, S.B. No.1m 83rd Legislature, item 44, VII-31 (2013) was passed, TxDOT and the [Texas Technology Task Force were directed to oversee a study on transportation technology. Through guidance from a technology industry expert panel, the TTTF has developed a

6803-P5 [CTR] ... Product 0-6803-P5

Full-text Link:
438 KB

Business Process Model / Logical Data Model


[2014] ... Jun Deng [and five others] · "Changing modeling needs over the past few years, spurred by the evolving policy contexts of transportation planning and emerging technologies, have led the planning community to explore tour-based and activity-based modeling paradigms as an alternative to the traditional trip-based modeling

6759-P2/P3 [CTR] ... Product 0-6759-P2; Product 0-6759-P3

Full-text Link:
· http://library.ctr.utexas.edu/ctr-publications/0-6759-P3.zip
568 KB PDF (P2); 1.6 MB ZIP (P3)

Real-time Optimization of Passenger Collection for Commuter Rail Systems


2014 ... by Yao Yu, Rand Machemehl and Shadi Hakimi · Commuter rail systems are being introduced into many urban areas as an alternative mode to automobiles for commuting trips. The shift from the auto mode to rail mode is anticipated to greatly help alleviate traffic congestion in urban road networks. However, the right-of-way of many

2014-600451-00082-1 [CTR] ... SWUTC/14/600451-00082-1

Full-text Link:
899 KB

Flexible Pavement Narrow Widening Best Practices and Lessons Learned


2014 ... Maria Burton [and six others] · The Texas Department of Transportation (TxDOT) has experienced problems with construction quality and performance on narrow widening projects (i.e., projects that notch and widen pavement to increase lane width 2–8 ft or add a 2- to 5-ft shoulder). Texas has approximately 64,000 lane-

6748-2 [CTR] ... FHWA/TX-14/0-6748-2; Product 0-6748-P1; Product 0-6748-P3

Full-text Link:
14.5 MB

Use of Highway ROW for High-Speed Intercity Passenger Rail and Dedicated Freight Transportation Systems. Guidebook


2014 ... Katie A. Larsen [and eight others] · "The purpose of this guidebook is to help TxDOT staff evaluate proposals for using new or existing highway right-of-way (ROW) for high-speed intercity passenger rail (HSIPR) or dedicated freight transportation systems. This guidebook is intended to provide the foundation for a new manual

6698-P3 [CTR] ... Product 0-6698-P3

Full-text Link:
10.8 MB

0-6759, Developing a Business Process and Logical Model to Support a Tour-Based Travel Demand Model Design for TxDOT


[2014] ... Research Performed by: Center for Transportation Research; Research Supervisor: Chandra R. Bhat; Researchers: Jun Deng [and four others] · "The Texas Department of Transportation (TxDOT) created a standardized trip-based modeling approach for travel demand modeling called the Texas Package Suite of Travel

6759 PSR [CTR] ... 0-6759-S ... Project Summary

Full-text Link:


Companion PowerPoint Presentation to Unity Database


2014 ... [Center for Transportation Research] · This is a printout of Powerpoint slides from the presentation "Integration of Data Sources to Optimize Freight Transportation in Texas." · "December 2013; Published September 2014" · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).

6697-CTR-P2 [CTR] ... Product 0-6697-CTR-P2

Full-text Link:


Freight Data Architecture Business Process, Logical Data Model, and Physical Data Model


2014 ... Dr. C. Michael Walton [and six others] · "In November 2011, the Texas Department of Transportation (TxDOT) funded a study to integrate data from multiple sources to optimize freight transportation planning efforts in the state. The Center for Transportation (CTR) study team was commissioned to explore the feasibility of entering

6697-CTR-P1 [CTR] ... Product 0-6697-CTR-P1

Full-text Link:
0.9 MB

0-6803, New Technology Task Force, Phase II


[2014] ... Research Performed by: Center for Transportation Research; Research Supervisor: C.M. Walton; Researchers: Peter J. Jin, Andrea Hall · "Texas’ 83rd Legislature charged the Texas Department of Transportation (TxDOT) with examining and evaluating innovative transportation technologies for purposes of reducing costs,

6803 PSR phase 2 [CTR] ... 0-6803-S 2 ... Project Summary Report

Full-text Link:
342 KB

0-6748, Best Practice for Flexible Pavement Structure Widening Projects


[2014] ... Research Performed by: Center for Transportation Research; Research Supervisor: Mike Murphy; Researchers: Maria Burton · "The Texas Department of Transportation (TxDOT) has experienced problems with construction quality and performance on narrow widening projects (e.g., adding a 2- to 5-ft shoulder)... due to

6748 PSR [CTR] ... 0-6748-S ... Project Summary Report

Full-text Link:
102 KB

Truck-Rail Intermodal Toolkit : User Manual


2014 ... Dan P.K. Seedah, Travis D. Owens, Robert Harrison · "The truck-rail intermodal toolkit (TRIT) was developed to help planners equally compare truck and rail freight movements for specific corridors and to give insight into some of the variables associated with each mode. The rail component of the model (CT-Rail) is designed

6692-P2 [CTR] ... Product 0-6692-P2

Full-text Link:


Trade Flows and Texas Gulf Ports : Panama Canal Expansion and South American Markets


2014 ... Dan Seedah [and four others] · In 2015, a new lock system will allow larger and more productive ships to use the Panama Canal to serve global markets. Widespread interest in the project and the impacts on US Atlantic and Gulf ports resulted in concern that US terminals and state transportation systems might be unprepared for the

6690-CTR-2 [CTR] ... FHWA/TX-13/0-6690-CTR-2

Full-text Link:


0-4562, Corrosion Resistance of Grouted Post-Tensioning Systems


[2014] ... Research Performed by: Center for Transportation Research; Research Supervisors: Dr. John E. Breen, Dr. Michael E. Kreger; Researchers: Andrew L. Kilduff [and eight others] · "Although the vast majority of post-tensioned bridges in the United States have performed satisfactorily, corrosion problems on a small number of

4562 PSR phase 2 [CTR] ... 0-4562-S2 ... Project Summary, 4562

Full-text Link:
69 KB

Policy Implications of Emerging Vehicle and Infrastructure Technology


2014 ... by Peter J. Jin [and three others] · This report considers a broad range of emerging transportation technologies that have potential for enhancing travel on and operations of the Texas transportation system. It provides an overview of technology classifications and assesses the policy implications of emerging vehicle and

2014-600451-00087-1 [CTR] ... SWUTC/14/600451-00087-1

Full-text Link:
894 KB

The Future of Fully Automated Vehicles : Opportunities for Vehicle- and Ride-Sharing, with Cost and Emissions Savings


2014 ... Daniel J. Fagnant, Kara M. Kockelman · Fully automated or autonomous vehicles (AVs) hold great promise for the future of transportation. By 2020 Google, auto manufacturers and other technology providers intend to introduce self-driving cars to the public with either limited or fully autonomous capabilities. AVs may be able to

2014-600451-00081-1 [CTR] ... SWUTC/14/600451-00081-1

Full-text Link:
2.1 MB

Cost-Efficiency of Highway Operations and Maintenance of Public-Private Partnerships


2014 ... by Sergio E. Martinez and C. Michael Walton · While the literature on public-private partnerships (PPPs) argues that the private sector?s life-cycle approach to design and construction results in operational cost efficiencies, empirical support is missing. This study explored that issue by conducting a four-prong investigation.

2014-600451-00086-1 [CTR] ... SWUTC/14/600451-00086-1

Full-text Link:
952 KB

Developing a Mode Choice Model for Small and Medium MPOs


2014 ... Subodh Dubey [and five others] · This project developed a process and framework for generating the inputs needed for estimating a travel mode choice model that includes the transit mode, and developing a framework for implementing the results of an estimated travel mode choice model to project mode shares in

6766-1 [CTR] ... FHWA/TX-14/0-6766-1

Full-text Link:
3.8 MB

Forecasting Tool User Manual


2014 ... Chandra Bhat [and three others] · "The Excel-based forecasting tool allows users to provide a mode choice model along with various skims (in-vehicle travel time, out-of-vehicle travel time, travel distance, and travel cost) in order to calculate the mode share at both the traffic analysis zone (TAZ) level and individual level. It also

6766-P1 [CTR] ... Product 0-6766-P1

Full-text Link:
27 MB: 1 PDF, 1 .xlsm

Stretch and Flex Program for TxDOT Office and Field Workers


2014 ... Lisa Griffin [and four others] · Strain/sprain-related incidents account for 40% of the total injuries of Texas Department of Transportation (TxDOT) employees. Over the past 5 years the most common strain/sprain injury was of the lower back; 50% of these injuries were caused by lifting tasks. The goal of this project is to create

6805-1 [CTR] ... FHWA/TX-14/0-6805-1; Product 0-6805-P1; Product 0-6805-P2

Full-text Link:
3.7 MB

Workshop Presentation


[2014] ... Subodh Dubey [and five others] · "On December 18, 2013, the research team hosted a workshop at CTR to gather feedback on and generate discussion of the mode choice model that was developed [as part of Project 0-6766, "A Generic Mode Choice Model Applicable for Small and Medium-Sized MPOs"]. Attendees included

6766-P2 [CTR] ... Product 0-6766-P2

Full-text Link:
1.9 MB

Stretch and Flex Guidebook


2014 ... Lisa Griffin [and four others] · "Use this guidebook to teach TxDOT field workers how to most appropriately and effectively use tools in the workplace in order to reduce injury. These guidelines are meant to provide general recommendations for basic tasks that field workers may perform. Note that the guidebook contains

6805-P1 [CTR] ... Product 0-6805-P1

Full-text Link:
530 KB

Field Evaluation of Automated Distress Measuring Equipment


2014 ... Pedro A. Serigos [and four others] · Project 0-6663 Phase 2 involved evaluation of the TxDOT automated visual distress 3D laser system van and three automated systems developed by automated visual distress data collection vendors. The research team selected 20 test sections in the Austin and Waco Districts

6663-2 [CTR] ... FHWA/TX-14/0-6663-2

Full-text Link:
86 MB ***large file, may take time to download

0-6805, Summary of Stretch and Flex Program for TxDOT Operations


2014 ... Research Performed by: Center for Transportation Research; Research Supervisor: Fernanda Leite; Researchers: Lisa Griffin [and three others] · "Strain- and sprain-related incidents account for 40 percent of the total injuries of Texas Department of Transportation (TxDOT) employees. Over the past 5 years, the most common

6805 PSR [CTR] ... 0-6805-S ... Project Summary

Full-text Link:


Recommendations for Selection of Automated Distress Measuring Equipment


2014 ... Pedro Serigos [and five others] · "Phase 2 of Texas Department of Transportation (TxDOT) Research Project 0-6663: Evaluation of Pavement Rutting and Distress Measurements had the objective of evaluating the accuracy and precision of the new automated system developed by a TxDOT research group (composed of staff

6663-P2 [CTR] ... Product 0-6663-P2

Full-text Link:
231 KB

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