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It depends on how "reasonably close" they end up coming. If it ends up being a xeno's paradox of issues where it can handle 90% of situations, then 99%, then 99.9%, then 99.99%, etc, but each of those incremental improvements prove harder and harder to achieve, how many lawmakers are going to say "Sure, only .001% of robot cars on the road get into catastrophic accidents in unhandled situations, that's fine, let's make these things legal"? The problem with emergent technology is that it's what people tend to be most afraid of, and if there ends up being situations a robotic car absolutely cannot handle that's known about, how long will it take for people to start abusing it? And for unhandled exceptions...awhile back I was driving up 280 and a police officer pulled out in front of traffic, flipped his lights on, and started weaving back and forth across all lanes of traffic. All the drivers slowed down and kept behind the officer, obviously not sure what was going on. The officer stopped weaving at a couple points along about a one-mile stretch to get out of his car and pick up an item off the freeway, then got back in and resumed weaving, until he got up to a previously-pulled-over car and parked behind another officer. That's definitely not something they covered in driver's ed, apart from "if something unusual is happening, slow down". But how long would it take for it to make the news if a smart car in that situation passed the car on a weave and struck a drunk guy that was stumbling along the freeway at 85mph, do you think? And do you really think every possible situation that occurs during driving will eventually be able to be handled by a smart car? Another example, any point you run into a car or random other vehicle that's double-parked in the city. If the car can only figure out that pedestrians are blobs of pixels, does it have sufficient resolution to figure out how far away that oncoming car is, or will it just patiently sit behind that moving truck until they're done and start moving again? There's a lot of edge cases for this tech, and most if not all of them have potentially fatal exception cases if you fail to handle them correctly. |
If they're actually thinking properly (doubtful), they'll look at the rate of catastrophic accidents with human drivers, and make a call based on whether or not self-driving cars are an improvement.