Volvo has developed a car that can detect possible pedestrian collisions and prevent them from happening.
The system basically uses a series of sensors that detect objects around the car and if the car seems to be headed for a collision, the vehicle will either 1) slow down significantly if it is going over 25km/h; or 2) stop completely if it is already going under 25km/h.
(Source: https://www.youtube.com/)