Patent ID: 8880323

Claim:
A computer-implemented method, comprising: obtaining a plurality of sensor data pairs from a stationary road sensor disposed at a first location along a road segment, each of the sensor data pairs comprising a traffic speed value that reflects speed, at the first location, of actual traffic on the road segment and a traffic speed time at which the corresponding traffic speed value was captured; obtaining a plurality of probe data sets from one or more moving probes, each of the probe data sets comprising a probe speed value for a probe traveling along the road segment, a location indicator specifying a probe location along the road segment for which the probe speed value was determined, and a time indicator specifying a time for which the probe speed value was determined; matching one or more sensor data pairs from the stationary road sensor to one or more probe data sets from the one or more moving probes; performing, by a processor, regression analysis on the matched one or more sensor data pairs and one or more probe data sets to determine a transform to apply to the traffic speed values obtained from the road sensor, the regression analysis comprising comparison of data derived from the stationary road sensor and data derived from the one or more moving probes; and applying the transform to at least one traffic speed value obtained from the stationary road sensor to provide an updated traffic speed value that differs from an initial traffic speed value obtained from the stationary road sensor, and providing the updated traffic speed value as a value that represents traffic speed in a vicinity of the stationary road sensor.