kb58 said:
I can't imagine owning a car company selling a self-driving car because of our litigious society. There'll be endless lawsuits for every oddball crash no one considered.
Here's a riddle I heard recently: Say you write software for electric cars, creating rules for given road conditions. A rule says, if the car sees something stationary in its lane, do a quick lane change to save both the car and driver. Situation: The car's driving down a two-lane street in town, and sees something stationary in its lane. The software tells the car to do a lane change. The thing is, there's oncoming traffic, and a sidewalk to the right, with objects on it. What should your software do? (let's also assume that it's raining, so the car can't stop, it must veer left, right, or go straight.)
What if the object in the road is an obviously empty cardboard box (but your sensors can't know that)?
What if the objects on the sidewalk are parking meters (that your sensors can't judge)?
What if the object in the street is a stalled car with people around it and the objects on the sidewalk are people? Look at all the permutations of the above; how can the car always make the right choice? To me, the car becomes better than people once automated driving results in fewer accidents than people-driven cars. Unfortunately, accidents will still happen, and the software will be blamed even for cases where the equivalent human driver would make the wrong decisions. Lawyers won't care, and will sue the company anyway.
My hat is off to Tesla for being brave enough to take this on. Parity will be reached when self-driving cars have less accidents than people-controlled cars, but that won't stop the lawsuits.
I can't speak for Tesla, but the very basic automatic braking on my GTI absolutely HAS engaged going about 60mph with a traffic stoppage ahead on the highway. It was quicker than my foot, which was about to do the same. You don't need an algorithm to change lanes, you just need the most simple algorithm: engage the brakes.
If your car "can't stop" because of rain, the algorithm should take the conditions into account and make the estimated stopping distance further ahead. We have rain-sensing wipers, so I assume the Tesla can sense when it's raining. . Or, just not be able to be used in the rain, that's an easy solution.
Side note: in the winter, the auto-braking sensor on the GTI (inside the VW badge on the grille) actually ices over and turns itself off (with a large, annoying warning on the dash). I certainly woudln't trust it in the rain, snow, etc since any of these sensors can be fooled by conditions.