Expanding Grope-Free Zones on Japanese Trains Japanese authorities are responding to the legendary overcrowding on Tokyo commuter trains. Railway officials say they can't actually relieve the crowding, but they can make it easier on women. In a survey, almost two-thirds of women between age 20 and 40 said they'd been groped by men in the crowded train cars. So the railroads are increasing the number of women-only cars. This protective measure has drawn protests from men, who call it discrimination.