Navigation device and method
First Claim
Patent Images
1. A method of determining speed information for a plurality of road segments in map data, comprising:
- receiving probe data relating to one or more road segments;
determining an average speed for each of the one or more road segments from the probe data;
determining a speed formula for determining an expected average speed for each of the one or more road segments based on the determined average speed from the probe data and one or more independent variables associated with each of the one or more road segments; and
determining the speed information for the plurality of road segments according to the determined speed formula.
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Abstract
Some embodiments provide a method of determining speed information for one or more road segments in map data by receiving probe data relating to the one or more road segments, determining a speed formula for the one or more road segments based on the probe data, and determining the speed information for the one or more road segments according to the speed formula.
8 Citations
17 Claims
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1. A method of determining speed information for a plurality of road segments in map data, comprising:
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receiving probe data relating to one or more road segments; determining an average speed for each of the one or more road segments from the probe data; determining a speed formula for determining an expected average speed for each of the one or more road segments based on the determined average speed from the probe data and one or more independent variables associated with each of the one or more road segments; and determining the speed information for the plurality of road segments according to the determined speed formula. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 14, 15, 16)
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9. A navigation device comprising:
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a processor; a memory; and a speed determination module arranged to determine speed information for one or more road segments in map data according to a plurality of received speed formulas and attributes associated with the one or more road segments, the attributes comprising at least one of variables indicative of a number of lanes of the road segment, a type of pavement alongside the road segment, a classification of the road segment, road segment access information, vehicle type permissions, road segment locations by state, and road segment proximity to rural or urban areas. - View Dependent Claims (10, 11, 12, 13)
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17. A non-transitory computer program comprising computer readable code which, when executed by a computer, performs the method of determining speed information for a plurality of road segments in map data, comprising:
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receiving probe data relating to one or more road segments; determining an average speed for each of the one or more road segments from the probe data; determining a speed formula for determining an expected average speed for each of the one or more road segments based on the determined average speed from the probe data and one or more independent variables associated with each of the one or more road segments; and determining the speed information for the plurality of road segments according to the determined speed formula.
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Specification