【Secret Sex Society (2018)】

Waymo's autonomous vehicles were put through the gnarly paces of 72 simulations of fatal crashes for safety research.

The Secret Sex Society (2018)Google spinoff company, which operates its self-driving car service in the area just outside Phoenix, released a study Monday showing how its autonomous vehicles would respond during unsafe driving situations. The company collected crash information from 72 real fatal crashes with human drivers at the wheel that took place in the Chandler, Arizona, area between 2008 and 2017. Researchers reconstructed them in a virtual simulation, with the Waymo vehicle replacing both the car that initiated the crash (called "the initiator" in the study) and the car responding ("the responder").

With Waymo replaced virtually in both positions of the crash, the company ran enough simulations (91 of them, to be exact, since some of the crashes involved just one car) to understand how its autonomous platform would respond in the situation. Notably: They wouldn't crash.

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Trent Victor, Waymo's director of safety research and best practices, summed up the results: Waymo is "capable of driving safely on its own and responding effectively when people make mistakes."

Via Giphy

With Waymo as the initiator, the results weren't too surprising. As Victor said in a briefing, the vehicle "doesn’t drive drunk or drowsy" and follows all rules of the road. In 2019, the U.S. reported 10,142 deaths from drunk driving crashes. The simulated Waymo was able to avoid 100 percent of crashes when it was replaced as the vehicle that caused the crash. That included 20 crashes that involved a pedestrian or a cyclist.

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Via Giphy

When the Waymo vehicle had to react to a dangerous driving situation, it was able to avoid or reduce the severity of the crash every time. As the responder, it completely avoided 32 crash simulations. In 20 of the simulations, the vehicle didn't use an evasive maneuver, meaning the car didn't have to make a big movement.

One of the real crashes reconstructed involved the initiator vehicle going 107 mph with an intoxicated driver who ran a red light. The responder vehicle was going 35 mph when it was struck. The driver died, while the initiator driver suffered injuries.

With Waymo replaced as both vehicles, in both scenarios the crash was no longer deadly. As the initiator, Waymo was driving the speed limit and didn't run the light, so the crash never happened. As the responder to the drunk driver, the Waymo vehicle was able to get out of the way and avoided the fatality that occurred in real life.

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Dr. Steven Shladover, a semi-retired research engineer at UC Berkeley's California Partners for Advanced Transportation Technology program, said in a phone call that the study is a useful contribution to autonomous vehicle safety research.

To him, it shows that the autonomous software and sensor suite on the vehicles are "able to respond successfully to bad behavior of other drivers."

Waymo's study comes out after AAA's annual autonomous vehicle survey found that 86 percent of American adults are still afraid or unsure about riding in a self-driving vehicle.

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