Hi, I noticed there are many well paved roads tagged with mtb:scale=0 which are automatically converted into unpaved by mkgmap. Combinations like mtb:scale=0 & surface=asphalt or mtb:scale=0 & tracktype=grade1 should imho not get a tag mkgmap:unpaved=1 Maybe set it to mtb:scale>0 ? # Flag unpaved roads. highway=* & (surface=cobblestone | surface=compacted | surface=dirt | surface=earth | surface=grass | surface=grass_paver | surface=gravel | surface=grit | surface=ground | surface=mud | surface=pebblestone | surface=sand | surface=unpaved | mtb:scale=* | tracktype ~ 'grade[2-6]' | smoothness ~ '.*(bad|horrible|impassable)' | sac_scale ~ '.*(mountain|alpine)_hiking' | sport=via_ferrata) { add mkgmap:unpaved=1 } (highway=bridleway | highway=path | highway=track | highway=unsurfaced) & surface!=* & tracktype!=* & smoothness!=* & sac_scale!=* { add mkgmap:unpaved=1 }