United States Department of Transportation
i
Use of pavement temperature measurements for winter maintenance decisions
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1998
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[PDF-43.34 KB]
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Alternative Title:Use of pavement temperature measurements for winter maintenance decisions : in Crossroads 2000 Proceedings
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NTL Classification:NTL-INTELLIGENT TRANSPORTATION SYSTEMS-Road Weather Management;NTL-SAFETY AND SECURITY-Highway Safety;
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Abstract:Formation of ice and frost on roadways and bridges presents a significant potential impediment to safe winter travel in Iowa. Roadway surface temperatures are not measured routinely by the National Weather Service and are not part of public forecasts of winter conditions, but highway maintenance personnel must make frost suppression and anti-icing decisions based on expectations of future roadway temperatures. Pavement temperatures are now measured at numerous locations in the state of Iowa and reported in real time to maintenance offices. One difficulty in use of such data is the question of how representative measurements made at one location are for other roadways in the vicinity. We have analyzed January pavement temperature data from urban/rural sites for both bridges and roadways in/near Cedar Rapids and Des Moines to evaluate nighttime trends and differences of temperatures at different locations and under different weather conditions. Preliminary results show that urban roadway pavement temperatures near both Des Moines and Cedar Rapids are 2 to 5°F higher than rural roadway pavement temperatures under clear sky conditions but only 1 to 2 or 1 to 3°F higher under cloudy conditions or when cloud cover is changing.
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