Ключевые слова: bicycle, bike, city, cycle, design, ecology, empty, energy, environment, equipment, exercise, fitness, frame, functional, information, infrastructure, lifestyle, lock, metal, mountainbike, nobody, outdoor, outside, parking, pedal, perspective, place, playground, public, rack, rental, ride, road bike, round, safety, secure, shape, sport, spot, station, stationary, steel, storage, street, traffic, transportation, urban, vehicle, wheel,