Deviation for an unknown reason

[Martin Wilcke]

Hi everyone!

This morning, I calculated a route that included a strange detour:

I couldn't find any restrictions in either the Traffic Overlay or HERE Map Creator.

Actually, I turned left at that point, which was possible and legal.

Does anyone have an idea what caused the detour?

Here is the link:
https://www.myrouteapp.com/en/social/route/12383325?mode=share

[Brian McG]

Hi @Martin-Wilcke the first thing to check when you come across this is to see what routing occurs with the OpenStreetMap & TomTom options
If they allow the left turn then the issue is probably going to be with the Here map data

You can then confirm what Here maps routing is like at Here WeGo
In your case this does appear to be a Here map issue

Sometimes you can fix the errors by editing the Here map data at Here Map Creator

I have had a look there but cannot work out what the error is, so maybe a report to Here about the problem

[Martin Wilcke]

@Brian-McG said in Deviation for an unknown reason:

Sometimes you can fix the errors by editing the Here map data at Here Map Creator

I have had a look there but cannot work out what the error is, so maybe a report to Here about the problem

Yes, that's exactly what I did, and I couldn't find an explanation either. Hence my question