Now consider if that is not a child, but a raccoon. Would you want your driverless car to swerve and put you and your family at risk? A human driver can discern the difference between a raccoon and a human child. That happened to me once, where a raccoon was in my path and stood up. I ran over it rather than swerve, because I would crash into oncoming traffic or into obstacles. Felt bad for the raccoon, but my family is more important.
Now consider if that is not a child, but a raccoon. Would you want your driverless car to swerve and put you and your family at risk?