If you’ve collected data with a GPS unit, either through a fitness device, mobile phone or dedicated GPS unit,
chances are good that it doesn’t line up perfectly with other data. The Map Matching API
allows you to correct the GPS traces against a common base map, OpenStreetMap.
The response is returned as a GeoJSON Feature Collection. Each feature includes a confidence value which is a number between 0 and 1, with 0 being very low confidence and 1 being very high confidence. More information about the response format can be found in the documentation.