Ключевые слова: activity, adventure, asphalt, autumn, back, bicycle, bike, biking, boy, caution, child, childhood, cycle, fitness, fun, kid, learn, leisure, lifestyle, little, move, outdoor, outside, park, pedal, people, person, play, recreation, riding, risk, road, safe, safety, school, sport, spring, street, study, sun, sunlight, tour, town, track, transport, transportation, travel, vacations, wheel, young,