A Google self-driving vehicle drives around the parking lot at the Computer History Museum after a presentation in Mountain View, California
A Google self-driving vehicle roams around the parking lot at the Computer History Museum after a presentation in Mountain View, Calif., on May 13, 2014
Stephen Lam—Reuters

On Wednesday, the British government will announce its plans to test autonomous vehicles on public roads by January 2015, but first the Highway Code will need to be revised to allow the driverless cars on the streets