Catalog Search Results
Pub. Date
[2003]
Description
This Contract Management Manual has been developed to assist cities and counties in the administration of a Law Enforcement Assistance Fund (LEAF) Project. The policies and procedures contained herein are in addition to, and consistent with, the rules and regulations and guidelines developed and issued by the Office of Transportation Safety. The State LEAF Administrator and the concerned party will resolve any differences between local policy and...
Pub. Date
2010.
Description
Positive protection is defined by Federal Highway Administration (FHWA) as "devices that contain and/or redirect vehicles and meet the crash worthiness evaluation criteria contained in NCHRP Report 350." By this definition, positive protection devices should prevent intrusion into the work area. These guidelines address the use of positive protection devices in work zones.
Author
Pub. Date
2011.
Description
This report documents two efforts to support CDOT in the area of Safety Performance Function (SPF) development. The first involved the data collection and development of SPFs for five categories of ramp terminals at diamond interchanges. The second effort involved estimating the overdispersion parameters for a number of existing SPFs already in use by CDOT for various roadway segment categories.
Author
Pub. Date
2020.
Description
CDOT has prioritized the research of select methods to evaluate the performance of the I-25 Gap work zone and future CDOT construction projects. Work zone performance measures provide comparative metrics that quantify the level of impact a work zone has on travelers, residents, businesses and workers. CDOT has identified the need to research and apply performance measures to the I-25 Gap construction project; establishing a foundation to improve...
Author
Pub. Date
2015.
Description
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.
Author
Pub. Date
2020.
Description
Deployment of 2+1 Road with Barrier in Colorado certainly has potential to improve safety where it replaces conventional 2-lane highways, primarily by preventing head on and sideswipe crashes. The Swedish design is most widely implemented and has a record of success, so Colorado drivers expect the "slow" lane to be the ending lane, and somewhat gentler tapers than Sweden employs.
Author
Pub. Date
2017.
Description
The Colorado-specific safety knowledge base, developed and effectively applied in the design process at CDOT, is not yet used to inform the planning process. This report transfers the use of these Colorado-specific, predictive and diagnostic tools to the transportation planning process. It develops a proposed methodology for the Explicit Consideration of Safety in the Transportation Planning Process by focusing on science-based and data-driven project...
Author
Pub. Date
2017.
Description
The U.S. Geological Survey (USGS), in cooperation with the Colorado Department of Transportation, determined the peak discharge, annual exceedance probability (flood frequency), and peak stage of two floods that took place on Big Cottonwood Creek at U.S. Highway 50 near Coaldale, Colorado on August 23, 2016, and on Fountain Creek below U.S. Highway 24 in Colorado Springs, Colorado on August 29, 2016.
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