When it comes to self-driving cars, what’s safe enough?

Still, simulations can’t replace the value of actual road experience, says Philip Koopman, an electrical and computer engineer at Carnegie Mellon University in Pittsburgh. “What about the scenarios they didn’t know [to simulate]?” he says. “Weird, weird, weird stuff happens out on the roadways.”
Since current self-driving safety assurances aren’t exactly airtight, Koopman argues that self-driving cars should be held to a way higher standard than human drivers — say, 10 times safer than the average human — before they’re given the green light. That would provide enough wiggle room in the margin of error to assume that the driverless car actually is safer, Koopman reasons.
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