Well all the problems about problematic arcs so far came up from a combination of two things:

a) my style creates two additional ways (bit different road_class/road_speed based on input) if the following is met: route relation hiking, bicycle or mtb | ( mtb:scale>0 & mtb:scale<5) | class:bicycle>1. Additionally if a road is oneway - and it's a low level road (so neither motorway,trunk,primary,secondary,tertiary) - and oneway, a low class/speed non oneway road is added as well (intention to have lower priority against the oneway than driving with the oneway direction. Also additionally if bicycle lane against the traffic flow is possible, it will create a line against the oneway.

b) mistakes in OSM data where wrongly several objects lie on top of each other.

Sorry my computer crashed yesterday evening, and I cannot boot it right now. Seems my Mainboard is dead. So I probably won't have possibilities for testing before Monday or Tuesday.

On 23 March 2018 at 09:39, Gerd Petermann <gpetermann_muenchen@hotmail.com> wrote:

Hi Henning,

Henning Scholland wrote
> Hi Gerd, I just was thinking about if one road is leaving the roundabout
> at two angles it may count on the Garmin as two roads and will lead to
> 'exit on 3rd exit' instead of 'exit on 2nd exit' for example.
>
> But I haven't gave it a try yet.
> ⁣

ah, okay, got it. I think Garmin should calculate the number for the exit
without "thinking" about the further
route but who knows.
I'd like to test it on my own but I found it too difficut to create a style
that tries to do the same as Felix'
style, and you don't get the same results when you simply add overlapping
highways in JOSM.

I am not aware of another style that adds multiple routable ways for one OSM
way, and Felix doesn't want to share his, so testing is his work. I can only
make educated guesses about the effects,
and of course I'll test it with other styles before committing it.

Gerd









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