Ключевые слова: bicycle, bike, biking, city, cycle, day, delft, ecological, environment, environmental, europe, frame, green, group, healthy, leisure, lifestyle, lot, many, netherlands, nobody, objects, orange, outdoors, park, parked, pedestrian, public, rack, railway, recreation, rent, rental, ride, road, row, sport, station, street, summer, tourism, town, traffic, transport, transportation, travel, urban, vehicle, wheel, wheels,