WASHINGTON — General Motors' self-driving unit Cruise LLC recalled 300 robotaxis and updated their software after a March 23 crash with a San Francisco bus.
In a document submitted Monday to NHTSA, Cruise said the collision was caused by "an issue related to prediction of the unique movements of articulated vehicles," such as buses and tractor trailers.
In the San Francisco incident, Cruise said its robotaxi initially perceived both sections of the bus as it was pulling out of a bus stop. As the bus proceeded forward into the Cruise robotaxi's lane, the rear section of the bus blocked the front section, and the bus began decelerating.
Cruise told federal regulators that its vehicle "inaccurately determined that the bus was continuing to move forward in traffic based on the anticipated behavior of the front section of the bus, which was by then obstructed, and the [automated driving system] commanded the [autonomous vehicle] to begin decelerating too lat…