The traffic light on the freeway on Ramps are fairly effective, but all it takes is one person who does not know how to merge to defeat the purpose o f them, Or one person who decides that they can enter the freeway at 35mph when everybody if doing 65+. I generally accelerate slowly, but from one of these traffic lights on a freeway on ramp, My foot nearly hits the floor and I make dang sure I am upto speed before having to merge into an opening, making sure I do not have to force an opening.
Think about this. All it takes is one person to hit the brakes to cause a traffic jam, as the person behind them hits the brakes a little later and a little harder, slowing down more, the person behind them does the same, until some amount of cars later the person has to come to a complete stop! All because one person was not paying attention or following too close and had to slam on their brakes so as to not run into the vehicle behind them which let off the gas.
Traffic jams are certainly caused by volume, but could be a million times better simply if people were not such imbeciles and had the ability to judge distance and speed and be able to maintain a steady speed, instead of accelerating, slamming on the brakes, and switching lanes in their 'me first, everything revolves around me, and nobody behind me even exists and I must check my instagram comments NOW' mentality.
Places I hate the most have high percentages of these types of people, and Southern California is ripe with the self important insufferable douchnozzles. but I dislike anywhere where a significant portion of the populace is either rude, self centered, or are simply confrontational insulting douchnozzles, simply because being so amuses them.
But In Socal, the weather is Mild and pleasant most of the time, the Pacific Ocean soothes my soul, and I got a nice parking situation going on, so dealing with insufferable douchnozzles that make up the large percentage of the population here, is just part of it.