access airport airport-terminal blue communicating communication conveniences directional-signs doors exit glass informative informing inside interior lift open open-doors over-pass passengers pedestrians signs travel travellers travelling way-out windows advice alert appropriate behavior appropriate behaviour avoid black bright care concern danger dangerous denied directions not allowed not permitted permission denied prohibited prohibition protect protection rules safety sign warning warning sign yellow adults barrier barriers ccrowds control controlled controlling crowd entering families gathered gathering guided guided-movement large-crowd men mobile-barriers movement on-the-move people public shadows shelter sheltered sunlight sunny sunshine thoroughfare underpass visitors walkers walking women alternative-way announcement arrow be-careful beware blocked blocked-path careful caution detour directing direction discoloration go-around lookout message observant observe security watch watch-out wording words accessible across bridge concrete construction cycle cyclists estuary handrails inlet light lighting metal ocean ocean-view path pathway railing rails shared sharing solar-lighting solar-panels span steel strength strong surface surfaces trees vegetation water accessibility appropriate-behavior appropriate-behaviour beach beach-side bitumen coast costal cycling moving protective risks sand sandy sealed share surfacing texture textured textures track traveling walk