WASHINGTON (Reuters) - U.S. auto safety regulators on Wednesday closed a probe into whether General Motors' self-driving unit Cruise robotaxis were taking sufficient precautions to safeguard pedestrians.

The National Highway Traffic Safety Administration, which opened the probe in October 2023, said it was aware of five incidents involved a collision between a Cruise vehicle and a pedestrian. NHTSA said the Cruise vehicle unsuccessfully tried to avoid each collision.

NHTSA in ending its investigation cited Cruise's November 2023 recall to address concerns and GM's decision to cease Cruise business operations. The agency noted that no versions of its Cruise self-driving vehicles were operating on public roads.