Ключевые слова: background, black, box, button, car, city, concepts, control, cross, crossing, crosswalk, danger, england, green, ideas, isolated, leeds, light, lit, london, man, occupation, pedestrian, press, push, red, road, safe, safely, safety, sidewalk, sign, signal, stop, stopped, street, symbol, traffic, transport, transportation, uk, up, urban, vertical, wait, waiting, walk, walking, warning, yellow,