United States Department of Transportation
i
Road Weather Management
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2004-01-01
[PDF-489.63 KB]
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Abstract:Adverse weather affects all of us. A snowstorm can shut down a city for an entire day or more. Weather emergencies, such as hurricanes, can prompt massive evacuations, causing gridlock and putting lives at risk. But it doesn't take a catastrophe to wreak havoc-even a rainstorm can paralyze a rush-hour commute. Every year there are nearly 7,000 fatal and 600,000 injury crashes on our highways during bad weather. Adverse weather is the second largest cause of non-recurrent congestion. Snow, ice and fog alone cause 15 percent of nonrecurring delay. Likewise, a light rain can increase travel time delay by 12 to 20 percent. This translates into financial impacts. In metropolitan areas truckers lose about $3.4 billion (about 32 million hours) stuck in weather-related traffic delays. A one-day highway shutdown can cost a metropolitan area up to $76 million in lost time, wages, and productivity.
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