Maybe the road would be safer (or just as safe but more efficient) with a posted limit 20mph above what it is. But the pearl-clutching mothers of the world can'

Maybe the road would be safer (or just as safe but more efficient) with a posted limit 20mph above what it is. But the pearl-clutching mothers of the world can't imagine a scenario where you can drive 50mph on a suburban street without killing half a dozen people so we'll never know.