All Nippon Airways (ANA) will introduce the women-only lavatories on international routes. ANA says they received “‘numerous requests from passengers for this service.'” In a 2007 survey, 90 percent of women said they liked idea.
One women-only lavatory will be provided in the rear section of the passenger cabin and will display a pink ladies sign, a signal designed to let male travelers know that they’ll have to look elsewhere.
ANA says there are exceptions. If a passenger is not feeling well or “‘when there are very few female passengers and the women-only designation has been lifted for the flight,'” male passengers will be allowed to use the lavatory.