It wouldn&#x27;t help very much.<p>We need visual processing and heuristic logic to handle a kid on the side of the road chasing a ball unlikely to intersect and catch it before he enters traffic.  Given that mandatory ability, reading a speed limit sign is pretty trivial.<p>Given that its very unusual for an oncoming car to swerve into your lane, and a giant pothole in the oncoming lane, and the car sees three cars swerve into your lane taking turns, what are the odds of the next car hitting you head on?  Compared to this puzzler, interpreting a stop sign is pretty easy.<p>Also the human drivers presumably will not understand the weird behavior of an enhanced self driving car, unless the human infrastructure matched the automatic infrastructure.  Of course you could analyze the human data visually to predict the human behavior, but then why bother with the automatic hardware sensors?<p>I guess a bad automobile analogy is if you must design this pickup truck to safely haul a 8000 pound trailer, then a 300 pound trailer will not overtax it.