OpenStreetMap
If you use the simplify way plugin for josm. Then if you add the parameter simplify-way.max-error to the advanced preferences you can adjust how much the way is simplified.
I use 250 to simplify ways which are mountain bike and bush walking tracks.
Also despite the warning about restarting josm, this is not required for adjusting the value of this preference.
Discussion
Comment from korea on 18 January 2009 at 08:57
I just tried 250 and that was way off for a walking trail.
Comment from petdr on 18 January 2009 at 23:25
I think the plugin has changed.
I downloaded the latest josm last week and I had to adjust the value to be much smaller, I think I'm using 2.5 now.