In the code handling the mkgmap:gtype tag the road class is set twice, but it should be the road speed the second time. See the attached patch to correct this. Index: src/uk/me/parabola/mkgmap/osmstyle/StyledConverter.java =================================================================== --- src/uk/me/parabola/mkgmap/osmstyle/StyledConverter.java (revision 1643) +++ src/uk/me/parabola/mkgmap/osmstyle/StyledConverter.java (working copy) @@ -264,7 +264,7 @@ if(vals.length >= 6 && vals[5].length() > 0) { try { - gt.setRoadClass(Integer.decode(vals[5])); + gt.setRoadSpeed(Integer.decode(vals[5])); } catch (NumberFormatException nfe) { log.error("OSM element " + element.getId() + " has bad value for roadspeed: " + vals[5]);