Ключевые слова: abstract, asphalt, auto, automobile, background, bicycle, biking, black, car, city, concept, course, cross, cycle, day, detail, direction, drive, driveway, empty, environment, forward, fresh, ground, guidance, indicating, indication, lane, line, lines, marking, motion, move, movement, outdoors, paint, painted, red, right, road, roadway, rough, route, rugged, shaggy, sign, surface, track,