4WD-vehicles beach churn churned-up churning coast coastline colors colours conservation conserve conserving damage damaged damaging driving dug-up environment environmental environmentally-unfriendly four-wheel-drive marked marks ocean ocean-edge off-road off-road-driving prints protect protection rough safety sand soft-sand surface surfaced surfaces tire-tracks track tracks traction tyre-tracks vehicles vehicles-permitted wild access-limited advice advising alert allocated allocation arrow authorised authorized automobiles behave black blue communicate communication denied directive emergency emergency-vehicles entry-denied entry-prohibited information informing limited limited-access no-access no-entry not-allowed not-permitted permission-denied prohibited prohibition red restricted restriction restrictions sign warning white access accessibility allowed announcement availability bus buses communicating designated designation direction informative location parking parking-area parking-lot parking-sign permission permitted approved boom-gate unauthorised unauthorized acceptable access-denied horses horses-not-allowed horses-not-permitted motor-cars signs car care carpark cars caution directing directional font indication indicator message public signage symbol text visitors appropriate-behavior appropriate-behaviour avoid bright concern directions limitations limited-entry rules warning sign yellow exceptions regulations responsible warning-sign compound police police-only