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Applying the Systems Engineering Approach to Video Over IP Projects

Description: Abstract: In 2009, the Texas Transportation Institute produced for the Texas Department of Transportation a document called Video over IP Design Guidebook. This report summarized an implementation of that project in the form of a workshop. The workshop was developed and presented as a pilot in Austin in 2010 and taught an additional four times in 2011 in Fort Worth, Lubbock, Houston, and San Antonio.
Date: December 2011
Creator: Thomas, Gary B.
Item Type: Refine your search to only Report

Benefits of Public Roadside Safety Rest Areas in Texas : technical report

Description: Report regarding efforts to develop a benefit-cost analysis methodology for safety rest areas in Texas and to demonstrate its application in select corridors throughout the state. This project also considers approaches to developing rest areas that could reduce costs to the public.
Date: May 2011
Creator: Carson, Jodi L.; Pezoldt, Val J.; Koncz, Nicholas A., 1964- & Obeng-Boampong, Kwaku Oduro, 1977-
Item Type: Refine your search to only Report

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

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

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

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

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

Development of the Transportation Revenue Estimator and Needs Determination System (TRENDS) Forecasting Model: MPO Sub-Models and Maintenance

Description: "This report summarizes the technical work performed developing and incorporating Metropolitan Planning Organization sub-models into the existing Texas Revenue Estimator and Needs Determination System (TRENDS) model. Additionally, this report explains the maintenance and monthly updates performed on the TRENDS model."
Date: November 2011
Creator: Glover, Brianne; Norboge, Nicolas & Ellis, 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

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

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

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

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
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