"Associates a sorted list of user or vehicle positions to the road network on a digital map."
Map matching is a technique in GIS that associates a sorted list of user or vehicle positions to the road network on a digital map. The main purposes are to track vehicles, analyze traffic flow and finding the start point of the driving directions.
From the Wikipedia article: http://en.wikipedia.org/wiki/Map_matching
Similar to geocoding and georeferencing, but somewhat the inverse. This process takes geographic coordinates, typically from a GPS device, and associates them with their existing features in a dataset. The coordinates may be displaced or incorrect due to reception or sampling rate issues; or the data may incorrectly represent the real-world features due to capture scale/resolution, changes since mapping, or a number of other creation issues.
