'Fully driverless' cars could hit California roads by April

California drivers may soon find themselves sharing the road with cars that don't have a driver behind the wheel.

Starting as soon as April, tech companies and vehicle manufacturers will be allowed to test driverless autonomous cars on California streets under new regulations announced Monday by the state's Department of Motor Vehicle. Before Monday's rules change, a driver was required to be in autonomous vehicles during testing.

"This is a major step forward for autonomous technology in California," DMV Director Jean Shiomoto said in a statement. "Safety is our top concern and we are ready to begin working with manufacturers that are prepared to test fully driverless vehicles in California."