Ключевые слова: activities, arrow, background, bail, beware, bicycle, bike, bikers, biking, city, cycle, cyclist, danger, direction, drive, ecological, exercise, grass, ground, hazard, hazardous, highway, indication, lane, lines, marks, outdoor, paint, road, safety, sign, signal, sky, slow, spots, street, symbol, track, traffic, trails, transport, transportation, travel, urban, way, wheels, wrinkled, yellow,