Driverless cars are certainly less error-prone overall than human operated ones. Distraction, sleepiness, intoxication, hubris, and other common "human error" causes of accidents are eliminated. Now we're seeing, though, that human beings - even pretty average ones - are still able to make better judgments in unique situations.

Because the recent incidents have been so laughably stupid from a human perspective, the instinct is to doubt the accuracy of driverless cars in all situations. The robots are able to do the comparatively simple things extremely well. It's just the more complex things they still have trouble with - so far. They're still safer than human operators, and will only continue to get better.