Hi Andrzej, I cannot reproduce this problem in MapSource. In Basecamp car and truck use the correct routing, motorcycle is as in your picture. I do not yet have a good idea where to look at. I tried changing the order of objects but that did not change the results. Maybe there is a special case with the encoding of bearings, but I have no clue. Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Andrzej Popowski <popej@poczta.onet.pl> Gesendet: Freitag, 6. Januar 2017 14:44:53 An: mkgmap-dev@lists.mkgmap.org.uk Betreff: Re: [mkgmap-dev] Estrange detours Hi, I have converted all trunks and primary into secondary roads and it didn't solve problem, so it is rather not connected to Garmin road type 0x02. Still rules for trunks in Spain doesn't fit well into mkgmap conversion, there could be other problems, like for example weird navigation messages. I have found another example for weird routing, where route turns form primary road into longer detour on service road, see picture angle2. In my case wrong routing is for car and motorcycle but goes correctly for truck. If I change angle for service road like on picture angle2, routing is correct. Attached is OSM data extract and test route for BaseCamp. -- Best regards, Andrzej