Safe driving distance would prevent crashes
I just read the article in The News on automakers putting robot brakes in cars to prevent rear-end collisions. When we moved here from San Francisco, the first thing I noticed on the Western New York Thruways was the tailgaters. No matter the speed, drivers will come right up to the rear of your car, pretty much all the time, day or night, wet or dry. My wife grew up in Springville and said this is common.
There is a standard rule for determining safe driving distance, which is to allow two seconds between your car and the one ahead of you. It would surely prevent many of the rear-end accidents I see frequently on the news.