California is home to more vehicles than any other state. And it can be dangerous on the highway. More than 35,000 people died in crashes on U.S. roads last year. Most of the time, human error was to blame. Some California innovators think one remedy might be to let computers take the wheel. California is one of the first states testing self-driving cars. And now they're close enough to reality that regulators are sketching out policies for them, from safety to ethics. Some proposals include cars that don't even need a steering wheel, accelerator, or brake pedal.
How Safe Is Safe Enough for a Self-Driving Car?
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