After noticing that the cue for the men’s room was non existent compared to those for the women’s room, I looked more deeply into the problem. I started an unofficial comparative survey. To my surprise I discovered that the a typical men’s room contained roughly 50% more fixtures (toilets + Urinals)than the typical women’s room (toilets only).
Consider that men don’t need to take off any clothes to use the urinals and women have to remove layers or garments, then its no surprise that it will take them longer to use a typical facility that has 50% less fixtures. Most architects are men and most of the building codes are written by men, but who knew?