[karussell]

> but no matter how I tweak the settings, it never gets it 100% right

Interesting. Did you try GraphHopper? You'll always find cases where it performs poorly but overall we get positive feedback for it and it is very often right and performs als in most cases fast. You can try one bike example here: https://graphhopper.com/api/1/examples/#map-matching or send your examples via our JS client https://github.com/graphhopper/directions-api-js-client

Probably one current problem of the bike profile is that we do not yet allow to walk in the opposite direction, but this might be beneficial for map matching.

[xnyhps]

If I remember correctly, the last thing I was working on was actually trying to see if GraphHopper performs better! I think I was either still trying to compile it or load a local map, I’m not sure. It has been a while since I’ve worked on this.

Also, I don’t expect it to be 100% correct everywhere, sometimes the GPS data is just not good enough or I might have traveled in a way that the map wouldn’t allow, but there were some instances I found where I thought it should’ve been able to find a match and it didn’t.