Prizewinning 2004 research by LC Davis of Umich showed that stop/go traffic jams were eliminated by adding in a certain percentage of cars with Adaptive Cruise

Prizewinning 2004 research by LC Davis of Umich showed that stop/go traffic jams were eliminated by adding in a certain percentage of cars with Adaptive Cruise Control (ACC.) It only took a little less than 1 in 5 cars. http://www.ur.umich.edu/0304/July19_04/19.shtml http://www.ur.umich.edu/0304/July19_04/19.shtml http://www.google.com/search?q=%2Btraffic+jams+%2Bdavis+%2Bacc+%2B2004 http://www.google.com/search?q=%2Btraffic+jams+%2Bdavis+%2Ba... What does ACC do? It imposes proper safe driving headway distance, as well as providing near-instant reaction time for braking. No tailgating, no accumulation of 1-sec human reaction times. But couldn't human drivers do the same by simply padding out their 2-sec spacing to 3-sec? And only a few need to do it.