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<body class='hmmessage'><div dir='ltr'>Hi Johan,<br><br><div><hr id="stopSpelling"><br><div>And yes... I'm fearing the firmware as the culprit too, however, Garmin's maps and other third party maps complied with others compilers work perfectly....</div><div><br></div>okay, I did not get that before.<br>There is a function in mkgmap that manipulates the values of angles to assure<br>that Garmin gives correct advices at e.g. roundabouts:<br>--adjust-turn-headings<br>I think this might be the reason for the problem.<br>I've compiled two gmapsupp files for the roundabout from your 2nd example,<br>once with (v1), once without this option (v2)<br><br>Please check if you see a difference.<br>The attached file contains the input file and the different gmapsupp <br>files produced with mkgmap r3336:<br><br>v1: java -jar mkgmap.jar --route --index --gmapsupp wrong-exit.osm<br>v2: java -jar mkgmap.jar --route --index --gmapsupp --adjust-turn-headings wrong-exit.osm<br><br>Gerd<br></div>                                            </div></body>
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