The National Highway Traffic Safety Administration has received multiple reports of crashes resulting from the car suddenly braking, prompted by self-driving software, in response to another vehicle approaching fast.
In each case, the vehicle approaching from behind collided with the Cruise car.
All of these examples, which relate to robotaxis in San Francisco, show vehicles that suddenly stop, for no reason, in the middle of the road.
Already in September
NHTSA's investigation aims to determine the "scope and severity of potential problems" and assess the safety implications.
In early September, Cruise recalled 80 cars to the United States to modify the software after a collision of a vehicle in its fleet that did not correctly predict the trajectory of another vehicle.
According to a report submitted to a Californian agency, two people had been slightly injured.
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