Yesterday +TOYOTA announced that they would be introducing several new safety systems in the next couple of years
Among these is a pre-collision system that automatically applies brakes and a pedestrian detection system that brakes and even steers around the person autonomously.
http://releases.jalopnik.com/toyota-develops-new-pedestrian-safety-technology-1443860813
I actually got to drive much of this technology during a visit to Toyota's proving ground in Japan in 2010. At that time however, the pedestrian detection system only applied the brakes but didn't steer the car.
Autoblog gets seat and simulation time with Toyota’s newest safety technology [w/video]