This 2-year project used a ground-based laser scanner to map avalanche path snow depths to support an effectiveness assessment of recently-installed Gazex avalanche control systems in the Loveland Pass (Seven Sisters) and Berthoud Pass (Stanley) highway corridors. Scans were collected during snow-free conditions for a baseline, and then prior to and post-storm event and post control operations, as weather and logistics allowed. Snow depth and snow depth change maps were derived from the laser scans, informing an assessment of specific controlled avalanche events and the general performance of the Gazex exploders in the individual starting zones., Jeffrey S. Deems, Peter J. Gadomski, Adam L. LeWinter, David C. Finnegan., "February 2019.", "Prepared in cooperation with the US Department of Transportation, Federal Highway Administration.", Includes bibliographical references (unnumbered page 22), Report No. CDOT-2019-04, Online resource; title from PDF cover (viewed September 2019)
Living snow fences (LSF) are designed plantings of trees and/or shrubs and native grasses along highways, roads and ditches that create a vegetative buffer that traps and controls blowing and drifting snow. These strategically placed fences have been shown to be cost effective in reducing highway maintenance associated with blowing and drifting snow conditions., Greg Sundstrom., "May 2015.", Prepared in cooperation with the US Department of Transportation, Federal Highway Administration., Bibliography: pages 19-20., Report No. CDOT-2015-01., Online resource; title from PDF cover (viewed April 2016)
The revegetation of previously disturbed areas from highway construction activities is a critical component to overall site stormwater management strategy. Poor revegetation actions during and after construction can lead to difficulty in deactivating stormwater construction permits (SCPs). Excessive duration of open permits due to poor revegetation success can result in higher non-project costs for erosion control, revegetation rework and maintenance, and regulatory compliance monitoring higher non-project costs for erosion control, revegetation rework and maintenance, and regulatory compliance monitoring and documentation. Open SCPs can increase the potential for regulatory inspections and fines. Unexpected rework and liability costs can be experienced by CDOT maintenance who is responsible for SCP compliance., Arthur Hirsch, Aaron DeJoia., "February 2015.", Prepared in cooperation with the US Department of Transportation, Federal Highway Administration., Bibliography: page 15., Report No. CDOT-2015-02., Online resource; title from PDF cover (viewed April 2016)
Cost-effective strategies were developed and identified to CDOT Highway Maintenance Managers to reduce rest area operational costs while conserving finite natural resources. Initial cost analysis indicates that reduced operational costs can be realized by implementing water conservation practices (waterless urinals, water harvesting, irrigation, energy conservation and alternative energy practices, and re-use and recycling of solid waste and landscaping transition toward xeriscape practices)., Title from title page., "March 2011.", "Report No. CDOT-2011-3, Final report."--Cover., "Sponsored by the Colorado Department of Transportation, in cooperation with the US Department of Transportation, Federal Highway Administration.", Includes bibliographical references., Performed by Colorado State University--Pueblo, sponsored by Colorado Department of Transportation--Research, Final report, System requirements: Adobe Acrobat Reader., Mode of access: World Wide Web.
This report presents information and data produced by the Colorado Department of Transportation's long-term study of Portland cement concrete pavement (PCCP) textures used within the state. The information includes vehicle accident, friction, and texture data. This information was used as the for a review of proposed revisions to the CDOT texture measurement method, CP-77, and a specification for PCCP texturing found in Sections 106 and 412 of the Standard Specifications., "October 2012.", "Report No. CDOT-2012-10. Final Report.", Description based on online resource; title from PDF cover; (viewed January 2012), "Prepared in cooperation with the US Department of Transportation, Federal Highway Administration.", Mode of access: World Wide Web.
Final report., Performed by University of Colorado at Boulder Dept. of Civil Environmental and Architectural Engineering., "March 2003.", Includes bibliographical references (p. 73-83)., Mode of access: World Wide Web.
Sponsored by the Colorado Department of Transportation in cooperation with the U.S. Department of Transportation, Federal Highway Administration., "September 2001.", "Report no. CDOT-DTD-R-2001-13.", Mode of access: World Wide Web.
This research report documents the findings of an investigation into automated temporary traffic control device (TTCD) deployment and retrieval technologies. The researchers found that some automated TTCD deployment and retrieval products may reduce one or more types of worker risk while increasing other types of risk. A fully automated product has the potential for the greatest risk reduction overall, but also has a much higher cost than less complex systems., LuAnn Theiss and Gerald L. Ullman., "July 2017.", Performing Organization: Texas A&M Transportation Institute., Includes bibliographic references (pages 31-34), Report No. CDOT-2017-07, Online resource; title from PDF cover (viewed August 2019)
Art Mears., In cooperation with the Federal Highway Administration., "March 1992.", Technical Report number: CDOT/DTD/R-92/4., Final report., Print version record.
video file MPEG 250MB, Airport operations specialist -- State patrol trooper pilot -- Unmanned aerial systems (UAS) pilot., Written and directed by Shahn Sederberg., Produced by Colorado Department of Transportation, Division of Aeronautics., Online resource; collective title from website (viewed August 2019)
The study found that FAST systems have demonstrated the potential to reduce the number of crashes and reduce the cost of winter maintenance activities, if sited at appropriate locations (e.g., high-traffic-volume ice-prone ramps). However, improved installation techniques and involvement of maintenance crews during FAST installation are necessary to further increase the cost-effectiveness of a FAST system deployment. Extra effort will be made in sharing the information gained from this research study by focusing on CDOT personnel involved in planning, design, construction, operation and maintenance of FAST systems., Anburaj Muthumani, David Veneziano, Jiang Huang and Xianming Shi., "October 2014.", Prepared in cooperation with the US Department of Transportation, Federal Highway Administration., Bibliography: page 71-75., Report No. CDOT-2014-11., Online resource; title from PDF cover (viewed April 2016)
Full depth reclamation of asphalt pavements using asphalt emulsions is a process that recycles and rejuvenates the existing asphalt pavement surface, base, and sometimes, the subgrade, providing an improved underlying structure for the new asphalt pavement. This report provides guidance, standardized plans and specifications, construction inspection best practices materials testing procedures and frequencies, a performance evaluation process, and quality assurance and quality control protocols when constructing FDR projects., Scott Shuler., "July 2015.", Prepared in cooperation with the US Department of Transportation, Federal Highway Administration., Bibliography: pages 33-35., Report No. CDOT-2015-04., Online resource; title from PDF cover (viewed April 2016)
"June 2005.", "Sponsored by: Colorado Department of Transportation In Cooperation with the U.S. Department of Transportation Federal Highway Administration.", Includes bibliographical references (p. 16)., Mode of access: World Wide Web.
The Colorado Department of Transportation (CDOT) has been trying to identify the most effective methods for managing low-volume roads (LVRs). These roads are facing multiple challenges including: reductions in maintenance budgets, impact of industrial activities, and potentially not receiving the most cost effective treatments. Considerable savings can be secured by implementing an effective and informed management system for all LVRs engineering issues, including: planning, design, and maintenance., Marwan Hafez, Khaled Ksaibati, Rebecca Atadero., "February 2018.", Report No. CDOT-2018-03, Online resource; title from PDF cover (viewed August 2019)
As recently as 1969 about half the school aged children in the United States walked or bicycled to school. Today fewer than 15% of school children walk or bike to school and as much as 20-30% of morning traffic is generated by parents driving their children to school. Children are less active today and the majority of children living within a 1/2 mile of schools are driven in private vehicles. Obesity rates are on the rise and the cost of obesity and other health related challenges have significant impacts on the rising cost of health care in the Unites States, not to mention the lifestyles of our children. In response to these challenges, in an effort to encourage healthy living, the Colorado Department of Transportation has developed a series of pedestrian and bicycle safety lesson plans in support of the Colorado Safe Routes to School program. These lesson plans, which help educators teach children about safe walking and bicycling, introduce a variety of skills that can help children stay safe while they walk by teaching them skills that will help them safely cross the street. Statistics show that child pedestrians are disproportionately represented in injury crashes and that the typical factors in those crashes that can be mitigated by education and practice., Online resource; title from PDF cover (viewed November 2016)
Final report., Performed in cooperation with the Federal Highway Administration under contract no., Includes bibliographical references (p. 38)., "May 2001.", Mode of access: World Wide Web.
"An investigative study by the Research Development and Technology Branch of the Colorado Department of Transportation"--VHS cassette label., video file MPEG 245MB, Title from VHS cassette label., "September 2001"--VHS cassette label., Written, directed and edited by David Michael Black; narrated by Marco Popovitch; project director, William (Skip) Outcalt., Based on VHS record
"April 2000.", "Survey and analysis conducted by: The Center for Research on Economic and Social Policy (CRESP) of the University of Colorado at Denver.", Includes bibliographical references., Mode of access: World Wide Web.
