How we can create safe Self driving cars?
Below are some ides,
There should be towers on road similar to mobile towers, to which all cars will keep on communicating. This way there would be computer which will know position and all cars in its circle. That computer will instruct cars to drive ie speed, direction, breaks, etc.
In case manual override, also computer will know its position and direction ie all the parameters of car. Computer will take decision fast and avoid collision.
Cars not having this system will not be allowed to enter on the road/lane.
Hope this looks wonderful. Other way is having lots of sensors on the car and let car decide movement.