I am trying to improve markings for MTB paths and routes at Medvednica mountain ih the area where I ride a lot and know paths well.
I use tags recomanded for MTB as described here: http://wiki.openstreetmap.org/wiki/Mountain_biking
Openstreetmap.org currently only partially renders these tags, but you can download maps rendered according to MTB tags here: http://openmtbmap.org/ (there is no online MTB map).
Also, I will add "MTB related" tags directly to existing paths as these will not interfere with other tags, specially those intended for hikers. My "MTB route 2" is slight variation of "official" MTB route No 2. of Nature Park Medvednica with my corrections to the route so that it less interferes with hiking routes.
Any suggestion is welcomed!