Some of the countries I have visited had a requirement for bicycles to be equipped with a bell. I THINK Germany was one of them, but not certain. Also, some countries have confusing laws about when having to use a sidepath when one is present (I'm pretty sure Germany was one, but again, not entirely certain.) This was frustrating as the sidepath was frequently inadequate and in worse condition than the nice, smooth asphalt on the road just a couple arm lengths away, not to mention having to negotiate a loaded bike through pedestrians, baby carriages, people waiting at bus stops, etc.) But, the sidepath had one of those little blue round bicycle signs so was clearly not intended as solely a pedestrian sidewalk.