In Denver, Colorado, anti-icing on interstate freeways reduced snow and ice related crashes by 14 percent.
The research reveals that compared to traditional winter weather maintenance strategies, anti-icing and pre-wetting techniques lead to improved pavement conditions, decreased use of chemical products and abrasives, decreased maintenance costs, lower accident rates. The goals for transportation agencies to utilize proactive winter maintenance solutions include maximizing traveler safety, improving levels of service, mitigating environmental concerns, improving public relations, and identifying cost savings.
The methodology consisted of literature searches and a questionnaire sent to maintenance professionals in 18 states and 2 Canadian provinces. Those that responded to the questionnaire received a follow up interview. The questionnaire explored the state-of-the-practice for winter highway maintenance and documented the advantages and disadvantages of anti-icing and pre-wetting strategies. Many maintenance managers surveyed indicated that the best approach to winter maintenance is to utilize a combination of all tools available. Results are based on the opinions of those interviewed and the statistics they provided.
In Denver, during a 12 year study involving anti-icing strategies on the interstate system, they saw an average of 14 percent decrease in snow and ice related crashes and more than 23 percent increase in traffic volume.
Author: O’Keefe, Katie, and Xianming Shi (Western Transportation Institute)
Published By: The Pacific Northwest Snowfighters Association, and the Washington State DOT
Prepared by Montana State University for the Pacific Northwest Snowfighters Association, and the Washington State DOT. Bozeman, MT
Source Date: 19 August 2005.URL: http://www.wti.montana.edu/ForceDownloadHandler.ashx?name=4W0169_Final_Report_ES.pdf
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road weather vehicle tracking, winter maintenance vehicle