communication comunicate cross cross walk crossing english metal pedestrian pedestrian crossing shape sign signage street street scene street sign streets verbage walk walking yellow directions dont green light lights navigate red road signal signs traffic traffic-light zebra fall hike hiking path trail wood woods cars caution children drivers driving flag marker motor-cars orange pedestrians roadside safety school school-crossing school-zone slow-down vehicles warning roadsign architecture bridge city footbridge motorroad stairs urban xing bank banks group lake Lithuania river shore tourists trakai troki wooden junction man beside bridges foot London over parallel rail railway suspension thames water