The Bundesstraße 16 or B 16 is one of the German federal highways crossing southern Bavaria from east to south. It runs from the Bavarian Forest to Regensburg and then along the river Danube to Günzburg. From Roding to Regensburg the highway is developed without any junctions and is in parts signed as B 16n. From Günzburg to Füssen the B 16 runs from north to south. From Wikipedia
