beware black cinema cinematize film movie pictogram prohibition red round screen shot sign suppression symbol warning white access denied no access no further not beyond this point private public stop here ahead blue pole post posts right signpost signposts signs sky sundtraffic traffic turn yellow atlantic danger fluid horizon lane liquid marker norway ocean sea Sea lane tower water boat coast coastline hazard lighthouse norwegian promontory rock shore speedboat advice alert appropriate-behavior appropriate-behaviour be-careful care careful caution cliff cliffside colors colours communicate communication concern dangerous deterioration fading-sign fall falling information informing light lookout observant restricted restriction restrictions risk risks risky river riverside safety shadows shapes shrubs sunlight textures trees warning-sign watch watch-out attention falling rocks germany isolated mountains rock fall rock slide rockfall stones announcement cars cautious communicating conditions directions Look looking road-conditions slippage slippery slow slow-down speed speed-reduction vehicles wet aged aging crossing elderly old pedestrians road-sign security seniors signage street-sign traffic-flow walk walkers walking denied law legal no-standing not-allowed not-permitted penalties permission-denied prohibited refusal road road-safety road-side unacceptable verge block computer email firewall illegal inbox internet mail phish phishing theft unsafe web