The automaker told the National Highway Traffic Safety Administration it was no longer seeking approval for the petition it filed in July 2021 citing its decision to close its self-driving venture Argo AI last year.

"As evidenced by the planned shutdown of our ADS partner Argo AI, we believe the road to fully autonomous vehicles, at scale, with a profitable business model, will be a long one," Ford said in its Feb. 13 letter, adding it was "more prudent" to focus on other technologies that "do not require an exemption."

(Reporting by David Shepardson, Editing by Franklin Paul)