The Origin of Traffic Lights

And don't forget http://cr4.globalspec.com/blogentry/11432/Garrett-A-Morgan

(5th para)

Who is still stumped about the chicken vs. egg question...The chicken is IN the egg (simultaneous creation).

Of course there's the cultural road-rage revolution that has transformed the interpretation of the "caution" light into a "accelerate as fast as you can and run the red light".

It seems that too much emphasis is put on "preparing for the crash" (i.e. air bags, crash bars, etc) instead of investing in avoiding the crash such as driver discipline/education and holding the driver accountable. Perhaps this would alleviate the nuisance auto insurance adds.