46 Matching Results

Search Results

Results: 1 - 24 next

Effect of climate change on crop production patterns with implications to transport flows and inland waterways

Description: "This report analyzed the demand for transportation capacity and changes in transportation flows on inland waterways due to shifts in crop production patterns induced by climate change."
Date: December 2011
Creator: Vedenov, Dmitry V.; Fuller, Stephen W.; McCarl, Cruce A.; Attavanich, Witsanu & Ahmedov, Zafarbek
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

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
Partner: UNT Libraries Government Documents Department

Prototype Design for a Predictive Model to Improve Evacuation Operations: Technical Report

Description: "This project focused primarily on the specific issue of developing a new technical tool to help TxDOT and other key operating agencies/stakeholders better predict when major elements of evacuation operations should be implemented."
Date: March 2011
Creator: Henk, Russell H.; Songchitruksa, Praprut; Venglar, Steven & Lim, Gino
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

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
Partner: UNT Libraries Government Documents Department

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
Partner: UNT Libraries Government Documents Department

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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Development guidance for sign design standards

Description: "This two-year project was designed to provide TxDOT with comprehensive review and update of mounting details and standards for large and small sign supports, and to provide a mechanism for TxDOT to quickly and effectively evaluate and address high priority needs related to sign support systems."
Date: November 2011
Creator: Silvestri, Chiara; Arrington, Dusty R.; Bligh, Roger P. & Menges, Wanda L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Collision Loads on Bridge Piers: Phase 2. Report of Guidelines for Designing Bridge Piers and Abutments for Vehicle Collisions

Description: "An instrumented, simulated bridge pier was constructed, and two full-scale collisions with an 80,000-lb van-type tractor-trailer were performed on it. The trailer was ballasted with bags of sand on pallets. The simulated pier was 36 inches in diameter and was supported in the longitudinal direction by two load cells. Force-versus-time data were obtained from the load cells."
Date: March 2011
Creator: Buth, Eugene; Brackin, Michael S.; Williams, William F. & Fry, Gary T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

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
Partner: UNT Libraries Government Documents Department

Manual for Assessing Safety Hardware test 3-11 of the Texas Department of Transportation Portable Concrete Traffic Barriers with sign support assembly

Description: This report presents the details of the design developed for mounting the traffic control sign support on top a portable concrete traffic barrier (PCTB), description of the full scale crash test performed on the design, and an assessment and evaluation of the performance of the PCTB with the sign support mounted on top according to specifications of "Manual for Assessing Safety Hardware" (MASH). The PCTB mounted sign support assembly anchored to the top of the TxDOT Type 2 PCTB tested for this … more
Date: January 2011
Creator: Williams, William F. & Menges, Wanda L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Safety and economic impacts of converting two-way frontage roads to one-way : methodology and findings

Description: Report on research develop information to communicate the safety and economic impacts of converting frontage roads from two-way to one-way. Researchers studied five locations in Texas where frontage roads were converted from two-way operation to one-way operation and developed accident modification factors related to frontage road conversion segments that roadway designers can use to guide frontage road conversion project planning.
Date: January 2011
Creator: Eisele, William L.; Yager, Christine E.; Brewer, Marcus A.; Frawley, William E.; Park, Eun Sug; Lord, Dominique et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Manual for Assessing Safety Hardware test 3-11 on the Texas T101 bridge rail

Description: Report on a study examining the impact performance of T101 bridge rails with pickup trucks. The study determined the T101 bridge rail did not meet Manual for Assessing Safety Hardware evaluation criteria for test 3-11 and the vehicle overturned after losing contact with the barrier.
Date: March 2011
Creator: Bligh, Roger P. & Menges, Wanda L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Microsurfacing in Texas

Description: This report describes the current state of practice of microsurfacing in Texas and compares it to best practices extracted from existing literature. A survey of DOT personnel, contractors and emulsion suppliers in Texas provides insight into the most crucial factors contributing to the success or failure of a microsurfacing. From the results of the survey, literature reviews, case studies and site visits, the research team analyzed material selection and mix design methods, construction practic… more
Date: August 2011
Creator: Broughton, Benjamin & Lee, Soon-Jae
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Planning tools to assess the real estate leveraging potential for roadways and transit: technical report

Description: Report on research examining the implementation of Senate Bill 1266, which provides for alternative funding methods for transportation projects and presenting recommended amendments to address the bill's shortcomings.
Date: January 2011
Creator: Vadali, Sharada; Bujanda, Arturo; Li, Yingfeng; Kuhn, Beverly; Zhang, Ming; Aldrete, Rafael M. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Development of a precast bridge deck overhang system

Description: This research investigated the overhang and shear capacity of a precast overhang system for potential use during the construction of bridges with precast overhang panels. The research was performed in three phases: the Phase 1 research including work specifically for the Rock Creek Bridge in Parker County, Texas; the Phase 2 research for general precast overhang panels, and; the Phase 3 research investigating the shear capacity. Grout material characteristics were also assessed for possible use… more
Date: February 2011
Creator: Trejo, David; Head, Monique H.; Mander, John; Mander, Thomas J.; Henley, Mathew; Scott, Reece et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Realtime monitoring of bridge scour using remote monitoring technology

Description: Report on research performed on the application of instruments including accelerometers and tiltmeters to monitor bridge scour. The instrumentation on the two bridges does not show great hope of application of accelerometers to monitor bridge scour because of a lack of sufficient excitation from traffic. Tiltmeters can provide the integral behavior of the bridge, and therefore are very useful devices for scour monitoring. Guidelines and protocols for scour monitoring based on the US59 over Guad… more
Date: February 2011
Creator: Briaud, Jean-Louis; Hurlebaus, Stefan; Chang, Kuang-An; Yao, Congpu; Sharma, Hrishikesh; Yu, Ok-Youn et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Exploratory study : vehicle mileage fees in Texas

Description: This project evaluates Vehicle Mileage (VM) fees as a possible funding mechanism for meeting the State of Texas' long-term transportation needs. Researchers conducted listening sessions with the general public and stakeholders to gather input on the concept. Researchers also prepared a decision matrix that can aid policy makers in evaluating the various trade-offs in policy that will be encountered in vehicle mileage fee system development. This study identified both challenges and opportunitie… more
Date: January 2011
Creator: Baker, Richard & Goodin, Ginger
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Field and laboratory investigations for Full Depth Reclamation projects

Description: Full-depth reclamation (FDR) offers a timely, cost-effective solution to restore a pavement's condition. However, FDR represents only one technique in the engineer's toolkit available for addressing deteriorating pavement conditions. The purpose of this project is to provide guidance on determining whether a pavement is a candidate for FDR and, if so, what design, construction, and inspection processes will maximize the performance of the completed reclamation. This report presents initial reco… more
Date: March 2011
Creator: Sebesta, Stephen; Scullion, Thomas & Estakhri, Cindy K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen