An autonomous vehicle being tested by Google hit a bus earlier this month, the first time the company said its self-driving technology is partly to blame for an accident.

Google Inc.s artificial-intelligence system will be interpreted as a driver by federal regulators, a step toward compliance that would help the tech giants self-driving cars hit U.S. roads.

Fully autonomous vehicles arent ready for prime time, as far as Californias Department of Motor Vehicles is concerned.