FILE - Vehicles are driven on the right side of a street, under the control of the U.S., in Naha, Okinawa island, Japan, in 1971. Okinawa on Sunday, May 15, 2022, marks the 50th anniversary of its return to Japan on May 15, 1972, which ended 27 years of U.S. rule after one of the bloodiest battles of World War II was fought on the southern Japanese island. In 1978, six years after the 1972 reversion of Okinawa to Japan, the traffic direction was officially changed back to driving on the left-hand side of the street, to follow Japan's traffic rules. (AP Photo/Y. Jackson Ishizaki, File)