Honda, Hyundai, Mitsubishi, Porsche, Proterra, Belgian manufacturer Van Hool, Volkswagen and Volvo have successfully completed the actions asked for in the NTSB recommendation. NTSB issued the recommendation in January 2021 to 22 EV manufacturing and said 12 including Ford, General Motors, Tesla and Toyota are making progress on steps identified in the recommendation. 

(Reporting by David Shepardson)