advice alert appropriate-behavior appropriate-behaviour avoid be-careful below-ground black care careful caution communicating communication concern danger dangerous digging digging-dangers flammable gas gaseous natural-gas no-ignition pipeline pipes potential red risk risks risky safety sign signs stay-clear vapour vapours warned warning warning-sign white announcement beware carpark directions informing Look looking lookout observant pedestrian pedestrian-speed reflective shared-area slow slow-down speed traffic watch watch-out circles denied disapproval disapproved inform information message messages not-allowed not-permitted permission-denied pictograms prohibited prohibition prohibitions protect protection public restricted restrictions rules signage symbols animals control controlled dog dogs lead leash nature nature-reserve outdoor-activity outdoors park pet pets requirement restrain restrained restriction text under-control words behave behavior behaviour communicate large-vehicles limitations limited reversal reversing trucks vehicles alongside barrier below concrete dangers deep deep-water depth direction disused edge fence fencing foliage grass greenery handrails light path plants railing rails ripples rippling river riverside shade shadows steps sunlight sunshine track trail tree water wet advising be-prepared-to-stop cars hazard limited-access motorcars no-overtaking no-passing readiness ready road-sign roadwork workers workmen Asia atlas Australia ball commitment continent continents countries country curve curved curves earth educational environment female geography global globe hands holding involvement knowledge latitude learning longtitude map maps miniature oceans pacific place-names places planet recognition representation round shiny size small sphere symbolic understanding woman World alcohol banned conditions consumption listen no-alcohol no-swimming area children observance road school schools slower time times zone Bin colors colours considerate consideration Dirt dirty garbage rubbish trams waste waste-bin waste-disposal yellow