Am 2024-08-10 09:39, schrieb Thorsten Kukuk:
To get that right: Your patch fixes one half of my first example: if you let Garmin calculate the route, it will now use the junction and will not use u-turns and detours to avoid it. So your patch is an improvement. What it does not fix is the wrong navigation instruction: it tells you to turn right if you need to go straight forward, and if you need to turn left it doesn't tell you anything. And this shouldn't have anything to do with road speed or surface.
Maybe pictures explain it better: 1. routing-no-patch.png is vanilla mkgmap r4921, Garmin makes two forbidden u-turns and a detour and avoids the junction. 2. routing-with-patch.png is mkgrmap r4921 with your patch, Garmin uses the junction. 3. navigation-instruction-turn-right.png: at the junction with a route straight forward Garmin Software and Devices tell you to turn right in navigation mode. I hope this explains it better. Regards, Thorsten
