You limited your search to:

  Partner: UNT Libraries Government Documents Department
 Serial/Series Title: Technical report (Texas Transportation Institute)
Development of a MASH TL-2 guardrail-to-bridge rail transition compatible with 31-inch guardrail

Development of a MASH TL-2 guardrail-to-bridge rail transition compatible with 31-inch guardrail

Date: December 2011
Creator: Bligh, Roger P.; Arrington, Dusty R. & Menges, Wanda L.
Description: The TxDOT Design Division is in the process of developing new guardrail standards that comply with the AASHTO Manual for Assessing Safety Hardware (MASH). The new guardrail system will provide increased capacity and improved impact performance relative to the current design. A key feature of the new system is an increased in rail mounting height from 27 inches to 31 inches. TxDOT's current TL-2 metal beam transition is 27 inches tall and is not compatible with the new 31 inch guardrail system. While the high-speed, nested thrie beam transition system meets MASH guidelines and is compatible with a 31-inch guardrail, it would be cost-prohibitive to use it on all roadways. The objective of this research was to develop a transition that is suitable for use on lower speed roadways, less expensive and complex than the current high-speed (i.e., TL-3) transition design, and is compatible with a 31-inch guardrail. A low-cost guardrail-to-bridge rail transition was successfully developed and tested under MASH Test Level 2 conditions. It is compatible with a 31-inch guardrail and can connect to rigid concrete bridge rails. It is considered suitable for implementation on roadways that have traffic conditions appropriate for the use of TL-2 safety hardware. Use ...
Contributing Partner: UNT Libraries Government Documents Department
TxDOT uses of real-time commercial traffic data :  opportunity matrix

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

Date: January 2012
Creator: Middleton, Dan; Brydia, Robert; Kraus, Edgar; Cheu, Kelvin; Rajbhandari, Rajat, 1973-; Songchitruksa, Praprut et al.
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.
Contributing Partner: UNT Libraries Government Documents Department
Rapid field detection of sulfate and organic content in soils :  technical report

Rapid field detection of sulfate and organic content in soils : technical report

Date: October 2010
Creator: Harvey, Omar; Sebesta, Stephen & Harris, Pat
Description: Report regarding efforts to identify a technique to map the sulfate content of soil over a large area to a depth of 3 to 4 feet. Two devices are noted: an electromagnetic device called EM-38 and a soil conductivity device called VERIS 315.
Contributing Partner: UNT Libraries Government Documents Department
Benefits of public roadside safety rest areas in Texas :  technical report

Benefits of public roadside safety rest areas in Texas : technical report

Date: May 2011
Creator: Carson, Jodi L.; Pezoldt, Val J.; Koncz, Nicholas A., 1964- & Obeng-Boampong, Kwaku Oduro, 1977-
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.
Contributing Partner: UNT Libraries Government Documents Department
Rural planning organizations, their role in transportation planning and project development in Texas :  technical report

Rural planning organizations, their role in transportation planning and project development in Texas : technical report

Date: October 2010
Creator: Overman, John H.; Ellis, Patricia; Frawley, William; Taylor, Ryan; Geiselbrecht, Tina & Goodin, Ginger
Description: Report containing research identifying and examining rural planning organizations, their structure and operation, and their role in transportation planning and programming.
Contributing Partner: UNT Libraries Government Documents Department
Development of a MASH TL-3 median barrier gate

Development of a MASH TL-3 median barrier gate

Date: February 2011
Creator: Bligh, Roger P.; Arrington, Dusty R.; Sheikh, Nauman Mansoor; Silvestri, Chiara & Menges, Wanda L.
Description: Report regarding a median barrier gate designed to both offer protection to motorists and easier cross-median access for emergency and maintenance vehicles.
Contributing Partner: UNT Libraries Government Documents Department
Energy developments and the transportation infrastructure in Texas

Energy developments and the transportation infrastructure in Texas

Date: March 2012
Creator: Quiroga, CeĢsar A.; Fernando, E. G. & Oh, Jeongho
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."
Contributing Partner: UNT Libraries Government Documents Department
Effects of bending and heat on the ductility and fracture toughness of flange plate

Effects of bending and heat on the ductility and fracture toughness of flange plate

Date: May 2012
Creator: Keating, Peter B. & Christian, Lee C.
Description: "This report documents the findings of the Texas Department of Transportation (TxDOT)sponsored research project that investigated the possible causes of the cracking and developed recommendations to prevent the occurrence of such cracking."
Contributing Partner: UNT Libraries Government Documents Department
Modern traffic control devices to improve safety at rural intersections

Modern traffic control devices to improve safety at rural intersections

Date: September 2011
Creator: Fitzpatrick, Kay; Chrysler, Susan T.; Sunkari, Srivivasa R.; Cooper, Joel; Park, Byung-Jung & Higgins, Laura
Description: "The goal of this project was to obtain a better understanding of modern TCD capabilities. Researchers conducted the following tasks literature review, crash data examination, TxDOT district survey, laboratory survey, field study, and development of principles for selecting TCDs."
Contributing Partner: UNT Libraries Government Documents Department
Studies to determine the effectiveness of automated flagger assistance devices and school crossing devices

Studies to determine the effectiveness of automated flagger assistance devices and school crossing devices

Date: October 2011
Creator: Finley, Melisa D.; Ullman, Brooke R.; Trout, Nada D. & Park, Eun Sug
Description: "This report describes the methodology and results of analyses performed to determine motorist understanding, as well as the operational and safety effectiveness, of automated flaggers assistance devices (AFADs) relative to the use of flaggers at lane closures on two-lane, two-way roadways."
Contributing Partner: UNT Libraries Government Documents Department
FIRST PREV 1 2 3 4 5 NEXT LAST