US agency closes investigation into GM’s Cruise robotaxis after software update reduces harsh braking incidents

The National Highway Traffic Safety Administration said it has closed its preliminary investigation into harsh braking and stalling problems in 1,194 autonomous ride-hailing vehicles operated by General Motors’ Cruise unit.

NHTSA said Thursday it was closing the evaluation, which began in December 2022, after a review of the Cruise recall and analysis of data, which showed a decrease in harsh braking incidents following software updates.

The robotaxi unit filed a recall earlier this month affecting all of its vehicles equipped with automated driving systems in the United States.

NHTSA said its Office of Defects Investigation has determined that Cruise vehicles were involved in 10 crashes, four of which resulted in injuries to vulnerable road users, after analyzing hard braking data from 7,632 incidents involving Cruise’s automated driving system.

Cruise is still facing investigations by the U.S. Department of Justice and the Securities and Exchange Commission following an accident last October in which one of its robotaxis struck a pedestrian and dragged her 20 feet (six meters).

The company, along with other autonomous vehicle technology companies such as Alphabet’s Waymo and Amazon’s Zoox, have come under heavy regulatory scrutiny over safety concerns following multiple accidents involving their vehicles.

Cruise, which resumed U.S. operations in April with a small fleet of human-driven vehicles in Phoenix, Arizona, said it has updated the software on all vehicles in the supervised test fleet.

In response to the October crash and subsequent investigations, however, Cruise’s CEO resigned last year and General Motors subsequently announced plans to cut spending on its self-driving unit.

The California Public Utilities Commission, which regulates robotaxi operations in the state, has imposed a maximum fine of $112,500 on Cruise for failing to promptly provide complete information to the commission about the October crash.

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