Using Weather Information to Improve Route
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Transcript of Using Weather Information to Improve Route
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AGILE CONF. 2012Pa u l l i t z i n g e r G e r h a r d n a v r a t i l Å k e s i v e r t u nD a n i e l a k n o r r
U n i v e r s i t y o f a p p l i e d s c i e n c e s t e c h n i k u m w i e nV i e n n a u n i v e r s i t y o f t e c h n o l o g yS w e d i s h n a t i o n a l d e f e n c e c o l l e g eU B I M E T g m b h
Using Weather Information to Improve Route
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Overview
The traditional approach considers legal speed restrictions only.
The approach using static weather information determines realistic driving speed based on the actual weather
conditions
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Weather and it’s influence on traveling
Influence of weather events on the roadway and traffic operations
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List of speed and capacity reduction
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Ubimet provided Real weather data. Ubimet: Ubimet not only uses public weather data but also accesses the data of the largest private weather observation network in Central Europe Data formats: Gridded Binary – 6hr update (10km) Network common data format – 1 hr update (4km)
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Route planning using weather information
Uwind = |U| + |V| + |UST|
DegreeCelisus = Kelvin – 273.5
The values for wind speed, temperature, and precipitation were then reclassifiedto match the categories in Table 2 and provide values for speedreduction.
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Route planning using weather forecast data
While the static weather routing usesonly one weather situation, the dynamic approach includes the hourly updatedweather forecasts.
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Route planning(Assumption)
Drivers move with an average speed equalling the speed limit.
The interval of the weather forecast data is 1 hour.The road network consists of highways with a
speed limit of 130 km/h.
Service areas: black ringsStart position: black dotDifferent weather condition: grey areaRoad network : black lines
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Result
Old route
New route
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Result
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Result