atlantic danger fjord hills islands islets lighthouse norway ocean rock sea sign sky tower warning water blue break broken cold crack fissure fracture glacier ice melt melting nature communicating communication denied directing direction directional directive informing not allowed not permitted parking permission denied prohibited prohibition red reflective road sign stop street sign traffic traffic flow verge white black fines information no-parking not-allowed not-permitted penalties permission-denied street-sign traffic-flow lane marker Sea lane waves access-denied access-limited advice alert announcement appropriate-behavior appropriate-behaviour ban banned be-careful beware bicycles-prohibited bylaws concern dangerous directions law legal no-wheels pedestrian-care pedestrian-safety prohibitions restricted restriction restrictions risk risks rollerskates-prohibited rules safety signs skateboards-prohibited warning-sign watch watch-out advising authorised-entry-only authorized-entry-only behave behavior behaviour care caution communicate confined-space lettering limited-access limited-permission limited-space risky signage unauthorised unauthorized animals awareness careful creatures fatal feed feeding food inform message protecting protection public-park text wildlife ? ask diamond graphic isolated mark post Question road shape simple what when where who why yellow bend destroy historic left old paint painted roadsign rotten rusty spray street turn unclear vandalism cycling-prohibited no-bikes no-cycling symbol