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 abstract action asphalt auto automobile background black blue blur bright car clouds color country curve design drive fast glass heart acceptable access-denied access-limited advice advising alert allocated allocation approved authorised authorized automobiles behave communicate communication denied directive entry-denied entry-prohibited horses horses-not-allowed horses-not-permitted information informing limited motor-cars no-access no-entry parking permission-denied permitted prohibited prohibition red restricted restriction restrictions sign signs unauthorised unauthorized warning white