background caution construction danger lens light orange reflector safety texture traffic urban warn warning cave cavern cliff coastline natural nature rocks sea tide wales water waves welsh anger angry boot finger forgive hurt kill pain pinch punish punishment unforgiving Apulia chalk Gargano horizon Italy Puglia shore architecture bay coast landmark lighthouse security tower advice alert announcement appropriate-behavior appropriate-behaviour be-careful beware black care careful cars communicating communication concern dangerous directional directions informing lanes left lefthand-lane Look looking lookout message observant risk risks road road-rules sign signs traffic-flow vehicles watch watch-out white ahead arrow attention colorful coloring colors colourful colouring colours communicate curve curves curvy difficult driving hazard irregular irregularity journey line outdoors risky roadsign roadway slow-down speed symbol transportation travel turn turning turns winding yellow Andalucia bluff hill landscape mountain outcrop rock rocky Spain tree blue break broken cold crack fissure fracture glacier ice norway slip slippery