I think that the problem is in this way:
https://www.openstreetmap.org/way/350947844
The data says that it has 4 lanes but in reality it has 3 (2 normal, 1 for public service vehicles).

I found photos in mapilary which shows the situation:
https://www.mapillary.com/app/?lat=47.23825806097561&lng=9.59604783902439&z=17&focus=photo&pKey=oacEd8jcWueMt0DCKiMYzA

