Ключевые слова: allow, amber, background, black, blue, car, changing, city, color, concept, control, cross, danger, electric, equipment, figure, green, icon, illustration, intersection, isolate, isolated, junction, lamp, light, lighted, lights, multiple, night, orange, pedestrian, proceed, red, regulate, road, safety, semaphore, sequence, shape, sign, signal, silhouette, stop, stoplight, street, symbol, three, toy, traffic, transportation, travel, urban, waiting, walk, warning, white, yes,