Robot vs. human

A Waymo robotaxi incident outside a California elementary school in January suggests an AI brain would react faster than a human, but it's not that simple.

The big picture: This incident fits into a much larger debate about whether autonomous vehicles can match — or exceed — the safety of human drivers.

• People fear self-driving cars, yet nearly 40,000 people are killed each year in traffic accidents involving human drivers.
• The answer to that question is crucial to winning the public's trust as robotaxis spread quickly across America.

Catch up quick: The National Highway Traffic Safety Administration is investigating after a Waymo robotaxi struck a child who ran across the street from behind a double-parked SUV.

• Police said first responders evaluated the student, with her parent present, and did not report any injuries.

The intrigue: Waymo claims its driverless vehicle behaved as expected, slamming the brakes as soon as it detected the child, slowing from 17 mph to under 6 mph before making contact.

• A "fully attentive human driver" in the same situation would have hit the child at approximately 14 mph, according to Waymo's computer modeling.
• "This significant reduction in impact speed and severity is a demonstration of the material safety benefit of the Waymo Driver, " the company wrote in a Jan. 28 blog post.

Reality check: Reacting quickly isn't the only way to avoid crashes, safety experts tell Axios. Context, judgment and driving experience matter, too.

• Young drivers have quicker reflexes, for example — but old drivers have much better safety records, notes AV safety expert Philip Koopman, emeritus professor at Carnegie Mellon University.
• A careful, competent human driver would have avoided a panic stop in the first place by adjusting their driving behavior amid the chaos of school drop-off — or taking a different route altogether, he argued.

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