Self driving cars are still subject to the laws of physics... unless you're going to dictate that self-driving cars never go above 15mph, I wouldn't advocate jumping in front of even a "perfect" self-driving car.
Braking distance (without including any decision time) for a 15mph car is 11 ft, for a 30mph is 45 ft. Self driving cars won't change these limits. (well, they may be a little better than humans at maximizing braking power through threshold braking on all 4 wheels, but it won't be dramatically different)
So even with perfect reaction times, it will still be possible for a self-driving car to hit a human who enters its path unexpectedly.
Braking distance (without including any decision time) for a 15mph car is 11 ft, for a 30mph is 45 ft. Self driving cars won't change these limits. (well, they may be a little better than humans at maximizing braking power through threshold braking on all 4 wheels, but it won't be dramatically different)
So even with perfect reaction times, it will still be possible for a self-driving car to hit a human who enters its path unexpectedly.