Ключевые слова: activity, asphalt, back, background, backlight, backpack, bag, bicycle, bike, biking, boy, caution, child, childhood, concept, cycle, cycling, early, education, happy, kid, leisure, lesson, lifestyle, morning, outdoor, outdoors, pedal, people, person, pupil, riding, road, rucksack, safety, school, schoolboy, schoolchild, street, student, summer, sunlight, sunrise, sunset, to, town, transport, transportation, urban, vacations,