bridge car cars cross crossing drive over path pylon river road street warsaw bar barrier cutout fence isolated rail railroad railway Railway crossing roadsign roadsigns sign signs warning junction man pedestrian pedestrians walk zebra bridges cityscapes crossings Gateshead heritage metro Newcastle structures train Tyne cemetery dead death graves graveyard park rasos religion rip stone cross stones Vilnius architecture coil coiled crossed elements nature ocean post posts rocks rope rural water wood x alert animal animals awareness be careful beware birds black bright care caution chickens chicks crossing- alert danger ducklings ducks protection road crossing watchout water birds water fowl wildlife yellow blue dark electricity evening light transpart transportation city footbridge motorroad stairs urban xing classic flagstone gray plate roof saavem sheet slab slate stone