Ключевые слова: action, activity, adrenaline, adult, adventure, autumn, bicycle, bicyclist, bike, biker, bmx, city, culture, cyclist, dangerous, extreme, family, free, freestyle, friends, fun, gang, generation, grind, handrail, helmet, hooligans, impudent, jump, man, park, people, rider, risk, schoolchildren, show, silhouette, skate, sport, stairs, stunt, sun, sunlight, sunset, teenagers, trick, urban, wheel, young, youth,