Ключевые слова: accident, attention, auto, bird, blue, caution, city, concept, conceptual, control, crossing, crossroad, danger, drive, go, green, gull, highway, illuminated, intersection, law, light, observe, permission, port, red, road, rush, safe, safety, sea, seagull, sign, signal, sky, stop, stop sign, stoplight, street, traffic, traffic light, trafficlight, transit, transport, transportation, travel, warning, way, yellow,