United States Department of Transportation
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Swalley canal ice detection system : final report.
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1990-01-01
[PDF-412.26 KB]
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Abstract:This report evaluates the reliability of information provided by a "SCAN 16" surface condition analyzer. SCAN systems are designed to inform highway maintenance personnel when frost, ice and snow are present on a roadway surface or bridge deck. The system evaluated here was installed on a bridge deck in a part of Oregon where frost, snow, and ice are frequently a hazard to traffic.
The evaluation of performance data suggests that the system cannot reliably report hazardous conditions on the deck. Local maintenance personnel, however, believe that they can make correct inferences from the system's output. Although it is not currently used to dispatch maintenance crews, a recent expansion of the system may change this. Sensors have been installed at a more remote location and now forecasting, as well as reporting of current conditions, is possible.
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