finished  stretches of Southern California freeways. For the first season, the  Glendale Freeway (Highway 2) in Montrose, California was used. For  the second and subsequent seasons, the intersection of the Foothill  Freeway (Interstate 210) and the Simi Valley Freeway (Highway 118)  in Sylmar, California were used. These sections of freeway were  under construction for many years, allowing producers about a mile  of finished freeway section to use for the show. The 210 and 118  were opened in the early