Ключевые слова: activity, arrow, background, bicycle, bycicle, cement, city, concept, concrete, day, ecological, environment, exercise, forward, gray, ground, healthy, highway, icon, lane, line, marking, outdoor, paint, painted, park, public, ride, road, roadsign, route, safety, sign, signal, sport, street, symbol, texture, town, traffic, transport, transportation, travel, vehicle, view, warning, way, wheel, white,