SOUTHLAND CALIFORNIA SUMMARIZED HISTORY, FACTS,  AND DEMOGRAPHICS 

Economic Activities

Highways

Beginning in the late 1940s the state embarked on freeway construction, and complicated, multi-laned freeways are one of California's more indelible images. But dependence on the freeways has given the state's metropolitan areas some of the worst traffic congestion in the nation. By 1999 there were 267,067 km (165,948 mi) of highways in California, including 3,904 km (2,426 mi) of the federal interstate highways.