US agency probes Amazon-owned Zoox self-driving vehicles after two crashes

The U.S. National Highway Traffic Safety Administration (NHTSA) said on Monday it has opened an investigation into’s (AMZN.O), opens new tab self-driving Zoox vehicles due to unexpected braking leading to two rear-end collisions that injured motorcyclists.

The NHTSA said it had opened its preliminary evaluation after two crashes involving the self-driving technology unit’s vehicles equipped with the Zoox Automated Driving System that resulted in minor injuries to motorcyclists and started a probe into 500 Zoox vehicles with automated driving systems.

Each incident involved a Toyota Highlander equipped with the Zoox automated driving system.

A Zoox spokesperson said the company was reviewing the request for information but did not offer in a statement additional details on the incidents. “Transparency and collaboration with regulators is of the utmost importance, and we remain committed to working closely with NHTSA to answer their questions,” the statement said.

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