Dennis - my family has lived in S Cal for 100 years next year. I worked as a sales rep using the LA freeways for most of the last 50 years. Los Angeles freeways used to be wonderfully maintained. They were what the other cities of the World patterned themselves after to build their road system. There has been very heavy traffic on the LA freeways for decades. The roads started to seriously decline in the 1990's. The people in charge of maintenance either did not do their jobs or did not have the funds to do their jobs starting about that time. I have no idea which is the case. I suspect some of the problem is diverting funds to alternative transportation and projects that were supposed to help the traffic such as light rain, car pool lanes, bike lanes, rebates for hybrids, now rebates for electric cars, electric car charging stations and so on. These are all good ideas, but only if you maintain the basic method of transport which is still the roads.
Neglect is the answer not more traffic. Maybe New Mexicans are more down to earth and do the basics instead of living in nana land like many in the once great "golden State" do.