UNT Libraries Government Documents Department - 83 Matching Results

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Comprehensive evaluation of compaction of asphalt pavements and development of compaction monitoring system

Description: "This report aimed to conduct a comprehensive evaluation of compaction of asphalt pavements and develop software for monitoring field compaction in real time.The results were used to determine the effects of compaction temperature, compaction method, mixture design, and base type on the compactability of asphalt mixtures.Also in this report researchers developed a system for monitoring and documenting the compaction process of asphalt mixtures called compaction monitoring system (CMS)."
Date: April 2012
Creator: Kassem, Emad Abdel-Rahman, 1979-; Scullion, Tom; Masad, Eyad; Chowdhury, Arif; Liu, Wenting; Estakhri, Cindy K. et al.
Item Type: Refine your search to only Report

Development of precast bridge deck overhang system: technical report

Description: "The testing and analyses documented in this report (0-6100-3) provides a new equation for determining the number of shear pockets required for the various shear connector/coupler systems evaluated in this research. This equation was used to determine the number of shear pockets required for the newer TxDOT girders."
Date: February 2010
Creator: Kim, Young Hoon & Trejo, David
Item Type: Refine your search to only Report

Evaluating the Impact of Overweight Load Routing on Buried Utility Facilities [Report 1]

Description: From abstract: This report focuses on the year one project objectives, which were (a) provide a review of technical design and engineering requirements for utility accommodation in Texas, (b) provide a preliminary assessment of potential impact of overweight loads on buried utilities, (c) provide a preliminary assessment of Utility Accommodation Rules (UAR) adequacy to deal with overweight loads on buried utilities, (d) provide preliminary recommendations for a business process for Texas Depart… more
Date: February 2011
Creator: Kraus, Edgar; Fernando, Emmanuel; Li, Yingfeng; Oh, Jeong Ho; Koncz, Nicholas & Quiroga, Cesar
Item Type: Refine your search to only Report

Evaluating the Impact of Overweight Load Routing on Buried Utility Facilities [Report 2]

Description: "The objectives of this project were to (a) provide a review of technical design and engineering requirements for utility accommodation in Texas, (b) provide an assessment of potential impact of overweight loads on buried utilities, (c) provide recommendations for a business process for TxDOT overweight routing coordination, (d) provide recommendations for changes to TxDOT manuals, (e) provide an assessment of UAR adequacy to deal with overweight loads on buried utilities, and (f) provide recom… more
Date: December 2011
Creator: Kraus, Edgar; Oh, Jeong Ho; Fernando, Emmanuel; Li, Yingfeng; Quiroga, Cesar & Koncz, Nicholas
Item Type: Refine your search to only Report

Implementation of Transverse Variable Asphalt Rate seal coat practices in Texas

Description: An implementation project was performed to expand use of transversely varied asphalt rate (TVAR) seal coat practices in all districts. The project included nine regional workshops, continued field texture testing of test sites, provided one set of sand patch test equipment to each Texas Department of Transportation (TxDOT) district, and published 500 copies of the TVAR Field Guide for broad TxDOT distribution.
Date: January 2011
Creator: Krugler, Paul E. & Estakhri, Cindy K.
Item Type: Refine your search to only Report

Performance comparison of various seal coat grades used in Texas

Description: This report documents research efforts to provide comparative quantitative performance information for various grades of seal coat aggregate available in the Texas Department of Transportation standard specifications. Length of service before replacement and level of noise generated at the tire-pavement interface were the primary focuses of the relative performance evaluations. The additional service life possible from seal coats with larger aggregate and higher asphalt application rates is com… more
Date: July 2012
Creator: Krugler, Paul E.; Wirth, John E.; Estakhri, Cindy K.; Freeman, Thomas J.; Wikander, John P. & Wimsatt, Andrew J.
Item Type: Refine your search to only Report

Development of Texas Transportation Institute's asphalt compaction monitoring system

Description: "In recent years, the Texas Department of Transportation has made significant progress with the development and implementation of new technologies to measure the uniformity of new hot mix asphalt layer construction. In Project 0-6992, researchers took this check one step further by developing an accurate global positioning system tracking system for compaction rolling so that the compaction effort applied can be monitored for 100 percent of the new surface. This report presents details of the h… more
Date: July 2012
Creator: Liu, Wenting; Scullion, Thomas & Kassem, Emad
Item Type: Refine your search to only Report

Mobility and economic effects of system investments in Texas: 2010 to 2020

Description: "The report summarizes estimates of the consequences of current funding levels and a range of greater and lesser funding amounts. The report describes the population, travel, system extent and expenditure data and analyses used to develop the mobility and economic effect analyses. An associated study by the Center for Transportation Research analyzed pavement maintenance spending and condition. Both the mobility and pavement studies were used as part of the March 2011 Texas 2030 Committee repor… more
Date: August 2011
Creator: Lomaz, Tim
Item Type: Refine your search to only Report

Field Evaluation of Asphalt Mixture Skid Resistance and Its Relationship to Aggregate Characteristics

Description: Report documenting the findings from the research that was carried out as part of Phase II of Texas Department of Transportation Project 0-5627. The research included measurements and analysis of mechanical and physical properties of aggregates used in surface mixes in the state of Texas.
Date: December 2010
Creator: Masad, Eyad; Rezaei, Arash; Chowdhury, Arif & Freeman, Thomas J.
Item Type: Refine your search to only Report

TxDOT uses of real-time commercial traffic data : opportunity matrix

Description: Based on a TxDOT survey, a review of other state DOTs, and researcher understanding of Intelligent Transportation System (ITS) needs, the Texas Transportation Institute (TTI) team developed a comprehensive list of opportunities for TxDOT to consider pertaining to future use of private sector (PS) data. Specific opportunities for applying private data were reviewed in light of accuracy of the data, coverage areas, data availability, cost, and control of the data stream.
Date: January 2012
Creator: Middleton, Dan; Brydia, Robert; Kraus, Edgar; Cheu, Kelvin; Rajbhandari, Rajat, 1973-; Songchitruksa, Praprut et al.
Item Type: Refine your search to only Report

Use of Intelligent Transportation Systems in rural work zones

Description: "This project defined an approach to integrating data collected and traveler information displayed in a work zone with a regional transportation management center and/or other state websites. The project conducted a literature review to define the state of the practice in work zone Intelligent Transportation Systems (ITS; smart work zones) and worked with the Texas Department of Transportation traffic managers to identify their safety and nobility needs in a work zone and where ITS can play a r… more
Date: September 2011
Creator: Middleton, Daniel R.; Brydia, Robert; Pesti, Geza; Songchitruksa, Praprut; Balke, Kevin N. & Ullman, Gerald
Item Type: Refine your search to only Report

Accommodating oversize and overweight loads: technical report

Description: "In this report the research project resulted in a statewide map recommending primary and alternate Oversize/ overweight (OS/OW)route networks for the most common origins and destinations based on historical Motor Carrier Division data. Keeping strategic routes open for OS/OW loads and minimizing the number of reroutes along the way will reduce the impedance and unknowns in this critical segment of the motor carrier industry."
Date: July 2012
Creator: Middleton, Daniel R.; Li, Yingfeng; Le, Jerry & Koncz, Nicholas
Item Type: Refine your search to only Report

Identification of priority rail projects for Texas: initial methodology/user manual and guidebook

Description: "This project developed a system of evaluative tools for the Texas Department of Transportation (TxDOT) to prioritize its investments in rail-related projects on a statewide basis. This work is meant to ensure that the limited available funding for rail projects is applied in the most beneficial and efficient manner and is focused upon addressing TxDOT's strategic goals. From the findings, researches recommend a transparent methodology for evaluating proposed rail projects and establishing an i… more
Date: February 2012
Creator: Morgan, Curtis Alan
Item Type: Refine your search to only Report

Development of guidelines for pedestrian safety treatments at signalized intersections

Description: "This document summarized the research conducted and the conclusions reached during the development of guidelines for pedestrian safety treatments at signalized intersections. The guidelines are focused on treatments that alleviate conflicts between left-turning vehicles and pedestrians."
Date: August 2011
Creator: Pratt, Michael P.; Songchitruksa, Praprut & Bonneson, James A.
Item Type: Refine your search to only Report

Energy Developments and the Transportation Infrastructure in Texas: Impacts and Strategies

Description: "This report describes the work completed to measure the impact of increased level of energy-related activities on the Texas Department of Transportation (TxDOT) right-of-way and infrastructure, as well as develop recommendations to reduce and manage TxDOT's exposure and risk resulting from those activities."
Date: March 2012
Creator: Quiroga, César A.; Fernando, E. G. & Oh, Jeongho
Item Type: Refine your search to only Report

Positive Feedback: Exploring Current Approaches in Iterative Travel Demand Model Implementation

Description: This report looked at the current Texas Department of Transportation Travel Demand Model (TxDOT TDM) and found that they do not include any impedance or accessibility measures in the trip generation step and found that the best approach is to feed back the output from the traffic assignment step to the trip distribution step.
Date: January 2012
Creator: Reeder, Phillip; Bhat, Chandra & Hall, Kevin
Item Type: Refine your search to only Report

Full-depth reclamation : new test procedures and recommended updates to specifications

Description: Rehabilitating an old pavement by pulverizing and stabilizing the existing pavement is a process referred to as Full Depth Reclamation (FDR). The stabilized layer becomes either the base or sub-base of the new pavement structure. This process has been used widely for over 20 years in Texas to strengthen and widen structurally inadequate pavement sections. This project developed guidelines on successful FDR practices, developed training materials, and identified areas where improvements to curre… more
Date: July 2012
Creator: Scullion, Thomas; Sebesta, Stephen; Estakhri, Cindy K.; Harris, Pat; Shon, Chang-Seon; Harvey, Omar et al.
Item Type: Refine your search to only Report
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