TRA Colorado Department of Transportation

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Erosion control and stormwater quality guide. References
Erosion control and stormwater quality guide. References
Introduction -- Stormwater quality regulations and program -- Pollutant types and effects on receiving waters -- Stormwater management plan procedures -- Construction best management practices -- Post-construction best management practices -- Appendix A, SWMP checklist -- Glossary -- References -- RECAT questionnaire., Title from cover., Includes bibliographical references.
Establishing realistic speed limits
Establishing realistic speed limits
Description based on online resource; title from PDF column (viewed July 2012), "8/02."
Evaluación ambiental proyecto de mejoras a Federal Boulevard entre 7th Avenue y West Howard Place
Evaluación ambiental proyecto de mejoras a Federal Boulevard entre 7th Avenue y West Howard Place
This Environmental Assessment (EA) has been prepared for the Federal Boulevard Improvements Project. The stretch of Federal Boulevard in the Project Area is lined by commercial development with residential development behind the businesses. Federal Boulevard serves as a high travel-demand traffic corridor. This is a local-agency project sponsored by the City and County of Denver (CCD) in conjunction with CDOT and the Federal Highway Administration (FHWA) serving as joint lead agencies., ciudad y condado de Denver, Colorado ; principales agencias Administración Federal de Carreteras, Departamento de Transporte de Colorado., "Miércoles, 15 de octubre de 2014.", Includes bibliographical references., Número de proyecto: NHPP 2873-172., Código del proyecto: 19957, Online resource; title from PDF cover (viewed April 2020)
Evaluating effectiveness of crash type SPFs in safety management : comparing the effectiveness of network screening and diagnostic methods using aggregate SPFs and test of proportion with crash type SPFs
Evaluating effectiveness of crash type SPFs in safety management : comparing the effectiveness of network screening and diagnostic methods using aggregate SPFs and test of proportion with crash type SPFs
Since 2000 CDOT has made effective use of Safety Performance Functions (SPF), Level of Service of Safety (LOSS) concept and diagnostic norms to prioritize, plan and scope safety improvements on all projects. A recent trend in road safety research, however, is to develop SPFs for each crash type. This approach is significantly more costly and labor intensive than the one used by CDOT, the benefits of this approach, however, were not well understood. It was not known if having crash type-specific SPFs will improve effectiveness of safety management, or if it will simply make the process more labor-intensive and less accessible to practicing engineers and planners. The intent of this project is to compare the effectiveness of network screening and diagnostic methods using aggregate SPFs and Test of Proportions with crash type SPFs., Jake Kononov, Jim Williams, Scott Thomas., "October 2020.", "Performing organization: University of Colorado, Department of Civil Engineering.", Includes bibliographic references., Report No. CDOT-2020-12.", Online resource; title from PDF cover (viewed February 2021)
Evaluating the effects of concrete pavement curling and warping on ride quality
Evaluating the effects of concrete pavement curling and warping on ride quality
David K. Merritt, George K. Chang, Helga N. Torres, Kiran Mohanraj, Robert O. Rasmussen., "September 2015.", Prepared in cooperation with the US Department of Transportation, Federal Highway Administration., Bibliography: pages 59-61., Cover title., Final report; August 2013-July 2015., "Report No. CDOT-2015-07.", Performed by Transtec Group, Inc., sponsored by Colorado Department of Transportation - Research 414.02
Evaluating the human-automated maintenance vehicle interaction for improved safety and facilitating long-term trust
Evaluating the human-automated maintenance vehicle interaction for improved safety and facilitating long-term trust
Automated Truck-Mounted Attenuators (ATMAs) utilize technology to remove a human driver from a vehicle with a high potential for collision. This report evaluates DOT workers' perceptions of working with this automated technology, in order to identify any disconnect between operators and the ATMA system. The study objective was to 1) understand workers' acceptance and understanding of the ATMA technology; 2) Identify ATMA-worker interactions that are successful and interactions that could be improved; and 3) evaluate how various training impacts their perceptions, acceptance, and use., Erika E. Miller, Shiva Pourfalatoun., "May 2021.", Includes bibliographical references (page 18), Report number CDOT-2021-05, Online resource; title from PDF cover (viewed July 2021)
Evaluation and comparison of three chemical deicers for use in Colorado
Evaluation and comparison of three chemical deicers for use in Colorado
Phase II final report., Performed by Western Environmental Analysts in cooperation with the Federal Highway Administration., "August 2001.", Includes bibliographical references (leaf 34)., Mode of access: World Wide Web.
Evaluation and mitigation of environmental impacts prior to project selection
Evaluation and mitigation of environmental impacts prior to project selection
Cover title., "April 2007.", "Report NO. CDOT-2007-6; Final report.", Mode of access: World Wide Web.
Evaluation and performance of HDPE pipes under CDOT highways, T-REX, and other locations
Evaluation and performance of HDPE pipes under CDOT highways, T-REX, and other locations
HDPE pipes used in CDOT drainage systems are expected to have a 50-year design life. During the T-Rex project in 2003 a number of HDPE pipes were installed with shallow cover. Later, the majority of these pipes had to be removed and replaced after they were damaged by construction equipment driving over installed pipes, and excavations occurring near installed pipes. In this study, performance of HDPE pipes under CDOT highways was evaluated by: an extensive literature review; field studies utilizing manual inspection, CCTV video inspection, and laser-ring profiling technology; and, by observing a CDOT HDPE pipe installation project., Albert Molinas, Amanullah Monnandi, Aziz Khan, Brett Sollenberger., "March 2018.", Bibliographical references (page 48-56), Report No. CDOT-2018-09, Online resource; title from PDF cover (viewed August 2019)
Evaluation of CDOT specifications for class H and HT crack resistant concrete
Evaluation of CDOT specifications for class H and HT crack resistant concrete
This study examined the performance of concrete mixtures designed to increase cracking resistance for Colorado bridge decks. The current CDOT Class H and HT concrete mixtures and nine other mixtures were investigated to aid in the development of a more crack resistant concrete specification., Cover title., "June 2010.", "Report No. CDOT-2010-5, final report.", Includes bibliographical references (p. 47-48), Mode of access: World Wide Web.
Evaluation of FRP prestressed panels/slabs for I-225/Parker Road project
Evaluation of FRP prestressed panels/slabs for I-225/Parker Road project
Interim report., Performed by University of Colorado, Boulder Dept. of Civil, Environmental & Architectural Engineering in cooperation the Federal Highway Administration under contract no., "December 2001.", Includes bibliographical references (p. 139-141)., Mode of access: World Wide Web.
Evaluation of GFRP deck panel for the O'Fallon Park bridge
Evaluation of GFRP deck panel for the O'Fallon Park bridge
Final report., Performed by University of Colorado Dept. of Civil, Environmental & Architectural Engineering in cooperation with the Federal Highway Administration under contract no., "July 2004.", Includes bibliographical references (p. 163-165)., Mode of access: World Wide Web.
Evaluation of Quantm software : final report
Evaluation of Quantm software : final report
The Colorado Department of Transportation (CDOT), Department of Transportation Development (DTD) conducted a study to evaluate the usefulness of the Quantm system for planning transportation improvements in Colorado., "December 2005.", "Report No. CDOT-DTD-E-2006-1, Final Report.", "Prepared in cooperation with the US Department of Transportation, Federal Highway Administration.", Mode of access: World Wide Web.
Evaluation of Swareflex wildlife warning reflectors
Evaluation of Swareflex wildlife warning reflectors
Swareflex wildlife warning reflectors were installed on a four-mile section of road near Denver. Two half-mile test sections were alternately covered and uncovered for a three-month period to see if any significant change in deer-vehicle accidents could be detected. No accidents occurred in the test sections during the evaluation period. The cover/uncover evaluation method proved too costly for the limited budget of this study. Photometric measurements of the reflectors have been made using vehicle headlights as the light source. The use of wildlife warning reflectors should be discontinued until more evidence is available on their effectiveness--especially on mule deer. A regional pooled-fund study should be started to investigate the effect of the reflectors on mule deer. This needs to be a large-scale effort to obtain results in a short period of time and to ensure validity., Dave Woodham., Technical Report number: CDOT/DTD/R-91/11., In cooperation with the Federal Highway Administration., "July 1991.", Includes bibliographical references (page 6)., Final report., Print version record.
Evaluation of a bridge deck with CFRP prestressed panels under fatigue load cycles
Evaluation of a bridge deck with CFRP prestressed panels under fatigue load cycles
This study evaluates the strength and long-term performance of CFRP prestressed panels in a bridge deck, compare the behavior of bridge decks designed with the empirical and conventional methods of AASHTO, and a new limit-state design, and examinne the influence of lap splices between precast panels on deck cracking., Cover title., "Report No. CDOT-DTD-R-2003-11."--Cover., Mode of access: World Wide Web.
Evaluation of alternative anti-icing and deicing compounds using sodium chloride and magnesium chloride as baseline deicers, phase I
Evaluation of alternative anti-icing and deicing compounds using sodium chloride and magnesium chloride as baseline deicers, phase I
"Sponsored by the Colorado Department of Transportation, in cooperation with the U.S. Department of Transportation, Federal Highway Administration.", "February 2009.", "Report No. CDOT-DTD-R-2009-1.", Includes bibliographical references., Mode of access: World Wide Web.
Evaluation of bridge deck sealers
Evaluation of bridge deck sealers
This study focuses on the evaluation of bridge deck sealers commonly used on highway bridge decks and their relative performance., Yu-chang Liang, Benjamin Gallaher, Yunping Xi., "June 2014.", Prepared in cooperation with the US Department of Transportation, Federal Highway Administration., Bibliography: pages 54-57., Report No. CDOT-2014-6., Online resource; title from PDF cover (viewed April 2016)
Evaluation of debris flow removal protocol, mitigation methods, and development of a field data sheet
Evaluation of debris flow removal protocol, mitigation methods, and development of a field data sheet
"December 2006.", "Report No. CDOT-2006-16.", Includes bibliographical references (p. 14-15)., Final report., Mode of access: World Wide Web.
Evaluation of different types of waterproofing membranes (asphaltic and non-asphaltic) as cost effective bridge deck barriers in reducing corrosive chloride effects
Evaluation of different types of waterproofing membranes (asphaltic and non-asphaltic) as cost effective bridge deck barriers in reducing corrosive chloride effects
In the past several decades, reinforced concrete structures have deteriorated similarly by chemical attack, especially chloride attack. For highway bridges, this phenomenon becomes more severe since bridges are exposed to extreme environmental conditions, such as snow and ice. In an effort to better protect the bridge decks and reduce maintenance costs. The use of WPMs was investigated by the Colorado Department of Transportation (CDOT) to analyze the performance of four products as an effective protection system., Yunping Xi, Linfei Li, René Railsback., "June 2018.", "Performing organization: University of Colorado, Department of Civil Engineering.", Includes bibliographical references (pages 60-62), Report No. CDOT-2018-16, Online resource; title from PDF cover (viewed August 2019)
Evaluation of environmental commitment tracking systems for use at CDOT
Evaluation of environmental commitment tracking systems for use at CDOT
Description based on online resource; title from PDF title page; (viewed December 2011), "Sponsored by the Colorado Department of Transportation in cooperation with the U.S. Department of Transportation, Federal Highway Administration.", "October 2011.", "Report No. CDOT-2011-13. Final report."--Cover., Includes bibliographical references (p. 57-61)

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