Search results
(1 - 9 of 9)
- Title
- A comparison of freeway and parallel major arterial corridors : a study of safety patterns in the Denver Metropolitan area
- Abstract
- This research project observes and analyzes traffic and accident history on Colorado State Highways and parallel arterial roads within a major southeast section of the Denver Metropolitan Area. The project focuses on the freeway section of C-470 between S. Santa Fe Drive and I-25 and comparisons with I-25 and the corresponding parallel east-west regional arterial corridors.
- Date
- 2015
- dc.title
- A comparison of freeway and parallel major arterial corridors : a study of safety patterns in the Denver Metropolitan area
- Title
- Monitoring wildlife-vehicle collisions : analysis and cost-benefit of escape ramps for deer and elk on U.S. Highway 550
- Abstract
- Wildlife fencing along highways can lower wildlife-vehicle collision rates by excluding animals from the road right-of-way. Still, animals can breach fencing and end up trapped within the fencing along the highway right-of-way, exposing wildlife and motorists to the risk of collision. Wildlife escape ramps are designed to allow animals safe passage out of the right-of-way. Few recommendations exist on effective design of escape ramps and monitoring data are limited.
- Date
- 2015
- dc.title
- Monitoring wildlife-vehicle collisions : analysis and cost-benefit of escape ramps for deer and elk on U.S. Highway 550
- Title
- Assessment and placement of living snow fences to reduce highway maintenance costs and improve safety (living snow fences) study no: 047-10
- Abstract
- 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.
- Date
- 2015
- dc.title
- Assessment and placement of living snow fences to reduce highway maintenance costs and improve safety (living snow fences) study no: 047-10
- Title
- Final report effectiveness of two reflection crack attenuation techniques
- Abstract
- Asphalt overlays are one of the most common tools for rehabilitating existing asphalt and concrete pavements. However, the performance of new overlays is often jeopardized by the cracking distress in the existing pavement. This existing cracking propagates, or reflects, through the new overlay to the surface of the new overlay. The rate at which this reflection cracking propagates to the surface is a function of overlay thickness crack severity, traffic loading and subgrade or subbase support. Reducing the rate at which these reflection cracks propagate to the surface of the pavement is desirable in order to lengthen the time between rehabilitation projects or crack sealing operations.
- Date
- 2015
- dc.title
- Final report effectiveness of two reflection crack attenuation techniques, Effectiveness of two reflection crack attenuation techniques
- Title
- Feasibility study of developing and creating a standardized subset of bridge plans
- Abstract
- The objective of this study is to determine if the development of a standardized subset of bridge plans s feasible and cost effective. The past 30 years of successful Colorado Department of Transportation bridge design can be used as a starting point to create a standardized subset of bridge plans.
- Date
- 2015
- dc.title
- Feasibility study of developing and creating a standardized subset of bridge plans
- Title
- Best practices for full-depth reclamation using asphalt emulsions
- Abstract
- 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.
- Date
- 2015
- dc.title
- Best practices for full-depth reclamation using asphalt emulsions
- Title
- Life cycle cost analysis rehabilitation costs
- Abstract
- The purpose of this study is to evaluate the cost of rehabilitation techniques used on interstates, state highways, and principal arterials dating back to 2009 for use in LCCAs. The rehabilitation techniques used in this study include cold in-place recycling, hot in-place recycling, full-depth reclamation, hot-mix asphalt overlays, hot-mix asphalt mill-and-fill, and portland cement concrete pavement. Hot in-place recycling was further broken into three categories; heater remixing, heater repaving, and heater scarifying.
- Date
- 2015
- dc.title
- Life cycle cost analysis rehabilitation costs
- Title
- Potential impacts of solar arrays on highway environment, safety and operations
- Abstract
- The advent of solar energy utilization in highway infrastructure around the country has been increasing in recent years. Right of Ways (ROWs) have several advantages for energy development such as the existing electrical infrastructure aligned with the major highways, a secured boundary, and easy maintenance access. To understand the potential impacts on driver safety, environmental resources, and maintenance operations, case studies are presented from national and international projects. Factors associated risk impacts are analyzed qualitatively as well as quantitatively. Mitigation measures are recommended to minimize the undesirable impacts in the planning, design, construction, operation and maintenance of solar array.
- Date
- 2015
- dc.title
- Potential impacts of solar arrays on highway environment, safety and operations