US auto safety regulators ended a federal investigation into Cruise robotaxis without taking action, removing an overhang weeks after General Motors Co. decided to shutter the struggling business.

The National Highway Traffic Safety Administration is investigating 2.6 million Tesla vehicles over crashes involving the "Actually Smart Summon" feature. The feature lets users move cars remotely. The probe examines the feature's maximum speed,

The agency said it analyzed 2,759 reports identified by Cruise that involved collisions, including 1,113 that involved a “pedestrian conflict.”