Hi Felix, please try also to compile with this additional patch and produce the debug info again. The patch simply executes the road merging before the angle fixing. I am not sure why we don't always do it in this order. By the way, did you read this post? http://www.mkgmap.org.uk/pipermail/mkgmap-dev/2018q1/028260.html Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Felix Hartmann <extremecarver@gmail.com> Gesendet: Mittwoch, 28. Februar 2018 18:29:05 An: Development list for mkgmap Betreff: Re: [mkgmap-dev] Bug in Road Merging - actually doubling roads. Oh thanks - I did not notice that. Here is now the orig_map compiled with the patched mkgmap. Hope this helps you. https://openmtbmap.org/debug_orig_map.zip Felix