Baselining current road weather information : results of the 2010 quality and importance survey final report.
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2011-01-30
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Edition:Final report; 8/25/09-1/31/11
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Abstract:This final report contains research findings on the characterization of the quality and value of road weather information resources used by ; members of the surface transportation community in their decision-making process. This report focuses on the results from the second ; survey in a series of surveys designed to establish a baseline metric on the quality of road weather information from the perspective of ; department of transportation (DOT) personnel who actively use the information to support their operational decisions. ; The assessment of quality for the 2010 survey utilized the online survey approach established during the 2008 phase of the baselining ; study. The 2010 survey was modified slightly from the previous version to address some inconsistencies found during the first survey. ; Survey questions sought input on product components, parameters within specific products routinely used by DOT decision makers. The ; report details the organization of the survey responses into a quality attribute and importance categories and then analyzes the results of the ; survey. It addresses variable user responses within and amongst quality attribute classes that illustrate the strengths and weaknesses of ; specific product components. The product and element categories addressed in the 2008 survey were not part of the question set in 2010; ; however, various product components were subsets of both the product and element categories. The report provides a logical map to ; illustrate how the product components responses were composed into responses representative of the product and element results from ; 2008. The resulting derived product and element measures permitted a mechanism to compare survey results from 2008 to 2010. ; The report presents the results of the 2010 survey. It augments the quality markers used for comparison in 2008 and points out road ; weather parameters that could benefit from improvement. Although slightly different sampling techniques were used between 2008 and ; 2010 the results provided similar quality metrics. Some variability existed between the two sets of results; however, the composite of all ; results indicated either no change or a slight increase in quality occurred in the two years. The modification of the survey format and a ; limited sample size created statistical uncertainties that required consideration. These unknowns were addressed and recommendations ; were offered to continue to improve the road weather monitoring program and stabilize the metrics.
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Main Document Checksum:urn:sha-512:07efc2ae2cc6195a95fcd92b98812ad7cb31652adbdfbabd6277969896d1f14e2d53994b966e7e77f459d9534025d9414854b994390b272fbf6db2d1f4890e31