I’d wager humans are doing as good as can be expected. Driving is inherently hazardous. With 3+ trillion miles driven in the US every year, there are going to be accidents. 40,000 deaths is probably as good as it gets.
Faster processing, more sensors, car-to-car communications, seeing in the IR or ultraviolet are all better than human capabilities. But I think humans have the advantage due to our “general intelligence”. No matter how fast the processor, no matter how many sensors are added, etc., without a general intelligence, self-driving cars will never do better than humans.
I’m sure the root cause will be found for the Uber accident, and the appropriate fix rolled out.
Hopefully Uber will share that info.