MORE: Journalist documents wild ride inside Waymo self-driving car in SF
The study covers 7.1 million miles across three cities, including more than 1.5 million in San Francisco- comparing driverless cabs with human drivers.
Waymo's submitted the study to scientific journals to be peer-reviewed, which is a process that's likely to take several months. Meanwhile, some academics have already looked at the study and say it provides reason to positive about the safety of autonomous driving technology.
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