Since I was at it I checked again Average tracks mentioned yesterday.
In the valley of Trenta there is a nice highway with a lot of logs uploaded but it isn't drawn really nice so far. I downloaded all the GPS data using JOSM, converted it to a data layer and cleaned it so that only good traces remained. Saving the data as gpx again, the resulting file contained nearly fifty tracksegments. I split that file into single gpx files each containing one of the segments. These I converted into csv format since the script wants this format.
A first run on all segments I cancelled after short time remembering the runtime of osm-makeroads.
I randomly selected some segments but since some covered only a part of that highway the result was unusable.
So I selected nine segments which covered the same part of the road with a length of 19 kilometres. The duration of the calculation with some seconds was satisfying short. The result itself is not to my liking. Though it is in most parts quite usable I will draw a better way by hand.
Conclusion: Most likely won't use this script in the future. It is not much advantage from drawing some kilometers of a way to checking and fixing a calculated one over its complete length before uploading.
(Sorry for the big screenshots, but all for the best visualisation :) The yellow line is the averaged track.)
"faulty" length: about 500m
"faulty" length: about 1200m