text: we got few pics of this road on mapillary and I do reckon you might be right. This one has been taken while looking south https://www.mapillary.com/app/?pKey=TreSK01-3Pebn_HUILoKXg&focus=photo&lat=45.50353108031749&lng=10.73344891139323&z=17&x=0.5057562969681764&y=0.5030745219439724&zoom=0 but it shows a ZTL (limited traffic area) sign, which means Via Rosenheim is where the ZTL starts and I guess it should continue through  Via Porta del Lion