In Europe, so says Popular Science.

"Cars in Europe may soon become very much more robotic whether drivers want
them to or not. New rules coming down from the European Commission will
require all commercial vehicles to be fitted with autonomous emergency
braking (AEB) technology by November 2013, and passenger vehicles could soon
follow suit."

http://www.popsci.com/cars/article/2...sold-next-year

You can probably expect the U.S. to mimic Europe if the "It's for the
children" politicians are in power.