Okay, I can speak from personal experience here- I was hit by a car at age 13, and lived to tell about it. I did NOT run out into the street, in fact, I was in a crosswalk when it happened. It completely was the driver's fault (a highschooler who was speeding) who hit me and it was a hit & run. I think he was caught. I was already in the crosswalk when it happened on my way to school right across the street from my house. Happened first thing in the morning, so I was tired. When I realized the bumper was coming extremely fast toward me, I couldn't think "RUN", all I could think was "WALK FAST!!!" (I was like a deer caught in the headlights) I wasn't able to get out of the way in time, I blacked out as I was hit and came to in mid-air, and again after I landed on the ground.I still today have no actual memory of the moment of impact. I was told that I hit the hood of the car and flew off.
Even if a child were to run out into the street, it is completely the responsibility of the driver (a car is a weapon) to attempt to stop/brake in time!!!