I need to identify the road (or, more precisely, the sequence of road segments) that a GPS track is following. I can see how to implement this through low-level methods - find closest segments for each point on the track, then clean up the results - but maybe this is already implemented somewhere?

I need to identify the road (or, more precisely, the sequence of road segments) that a GPS track is following. I can see how to implement this through low-level methods - find closest segments for each point on the track, then clean up the results - but maybe this is already implemented somewhere?