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by vel0city 1428 days ago
In a controlled access highway (no intersections, no pedestrians, no other kinds of traffic but cars going the same direction) with people paying attention and everyone going roughly the same speed the overall safety doesn't really change from 60 to 70 to 80mph. Texas raised the speed limits on a lot of back country highways to 90MPH. Guess what happened to the fatality rate. Practically unchanged.