US military personnel in Japan are now banned from drinking off-base late at night after several service member arrests.

A new liberty order, promised two months ago by the top U.S. commander in Japan following alleged cases of sexual assault and attempted sexual assault by U.S. troops, takes effect Tuesday.

The U.S. military's commander in Japan has finally tightened the rules around drinking for all troops stationed in the country months after several high-profile cases of sexual assault and rape on Okinawa have inflamed tensions.

Shibuya Ward has enacted an ordinance prohibiting nighttime street drinking in the popular tourist area and around the station.

U.S. sailors in Japan must adhere to a midnight-to-5 a.m. ban on drinking in public establishments off base, according to the order from Rear Adm. Ian Johnson. They may not even be in those places during those hours.