Hi all Various points and ideas: I think that testing for admin level boundaries is trivial provided you are using --bounds=..zip. So, for country XXX, could add the following to inc/roadspeed: mkgmap:country=XXX & mkgmap:admin_level8=* {set mkgmap:road-speed=-1} However, I haven't looked at the bounds/admin_level topic in any detail. As Gerd says, fine-tuning road speeds might have no effect on the choice between routing through or around urban areas, so enhancing the above with: mkgmap:country=XXX & mkgmap:admin_level8=* {set mkgmap:road-class=-1} might be more effective. NB might also need mkgmap:road-class-min and protect some highway types from modification. Accurate road speeds must be a good idea, giving better estimates of journey time and, in some cases, faster routes. Even if maxspeed:practical isn't in the default style, I'd have it in mine if there was a chance of useful data for it to pick up. To indicate slowed speeds at lights/crossings, need --link-pois-to-way and, in "points", something like: highway=traffic_signals | highway=crossing {set mkgmap:road-speed=1} This, if necessary, chops the road up and applies the specified speed to a short section around the point. Ticker