Assessing road traffic speed using data obtained from mobile data sources
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United States of America Patent
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Issued Date -
Sep 6, 2007
app pub date -
May 11, 2006
filing date -
Mar 3, 2006
priority date (Note) -
Abandoned
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Abstract
Techniques are described for assessing road traffic conditions in various ways based on obtained traffic-related data, such as data samples from vehicles and other mobile data sources traveling on the roads, as well as in some situations data from one or more other sources (such as physical sensors near to or embedded in the roads). The assessment of road traffic conditions based on obtained data samples may include various filtering and/or conditioning of the data samples, and various inferences and probabilistic determinations of traffic-related characteristics from the data samples. In some situations, the inferences based on the data samples includes repeatedly determining average speeds for road segments of interest during periods of time in such a manner as to weight various data samples for those road segments in various ways (e.g., based on a latency of the data samples and/or a source of the data samples).
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