Extrapolating speed limits within road graphs
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United States of America Patent
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Jun 25, 2019
Grant Date -
Jan 25, 2018
app pub date -
Jul 18, 2017
filing date -
Jul 20, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
In one embodiment, a speed limit application associates speed limits with road segments based on a road graph. In operation, the speed limit application selects a source road segment that meets a target road segment at an intersection based on the road graph. The source road segment is associated with a speed limit. Subsequently, the speed limit application determines a confidence value associated with extrapolating the first speed limit to the target road segment based on the first road graph. The speed limit application then determines that the confidence value indicates that a confidence in the extrapolation satisfies a minimum confidence requirement. Consequently, the speed limit application generates an attribute that associates the first speed limit with the target road segment. Finally, the speed limit application causes a navigation-related operation to be performed based on the attribute.
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