cats eyes humor humour metal red road sign warning sky white blue closed isolated roadsign street barrier control traffic ahead block blocked construction constructions detour diversion roadsigns signs turn works arrow direction distance guide information lead length mark path show way accident accidental Australia automobiles cars clouds crash crashed-vehcile divided divided-roads intersection junction lamp-posts left-hand-driving main-road motor-cars motor-vehicles movement road-rules round-about smash stationary street-junction street-scene suburban suburbs traffic-flow traffic-lanes vehicles verge wide wide-road advice alert appropriate-behavior appropriate-behaviour clearway communicate communication danger dangerous denied directions informing keep-clear law legal no-parking no-standing no-temporary-parking not-allowed not-permitted permission-denied prohibited prohibition refusal restricted restriction restrictions risk risks risky road-safety road-side safety unacceptable warning-sign