California regulators, calling for caution on self-driving cars, today proposed rules that would sharply restrict their use on the state’s roads — and place an outright ban on “driverless” cars that travel with no humans onboard. Under the proposal by the California Department of Motor Vehicles, all autonomous cars would need a steering wheel and pedals when operating on California’s public roads. Behind the controls, they would need a licensed driver with an “autonomous vehicle operator certificate” capable of taking control if something goes awry. In a statement today, DMV Director Jean Shiomoto said the agency’s main concern is “the safety of autonomous vehicles and the safety of the public who will share the road with these vehicles.”