The sign "Ban for riders" indicates that riding bicycles and similar vehicles is not permitted in the area where the sign is posted. This restriction is generally put in place for safety reasons, often in places with heavy pedestrian traffic or along roads where it might be dangerous for cyclists to be present.
Cyclists must find an alternative route or walkway if they encounter this sign. It is important for riders to pay attention to such signs to ensure they are following traffic regulations and maintaining safety for themselves and others.