Utilizing Vehicle Data for Road Weather Management (Pikalert 5.0).
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2017-01-01
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NTL Classification:NTL-INTELLIGENT TRANSPORTATION SYSTEMS-INTELLIGENT TRANSPORTATION SYSTEMS
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Abstract:Weather has a significant impact on the operations of the nation’s roadway system year round. For example, rain reduces pavement friction; winter weather can leave pavements snow-covered or icy; fog, smoke, blowing dust, heavy precipitation, and vehicle spray can restrict visibility; and flooding, snow accumulation, and wind-blown debris can cause lane obstructions. Weather events may prompt travelers to change departure times, cancel trips, choose an alternate route, or select a different mode. Slick pavements, low visibility, and lane obstructions lead to driving at lower speeds or with increased following distances. Thhese changes in driver behavior can impact the operation of signalized roadways, where traffic signals are timed for clear, dry conditions; through reduced traffic throughputs; increased delays; and increased travel times, or be stuck in a traffic jam. Travel time reliability for motorists and commercial vehicle operators is affected by a variety of weather and road conditions. Adverse weather and road conditions also impacts the operational effectiveness and productivity of traffic management agencies and road maintenance agencies through increased costs and lost time.
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