From BBC News:
The other day I was waiting for a bus in downtown Jerusalem. I was in the bustling orthodox Jewish neighbourhood of Mea Sharim and the bus stop was extremely crowded.
When the Number 40 bus arrived, the most curious thing happened. Husbands left heavily pregnant wives or spouses struggling with prams and pushchairs to fend for themselves as they and all other male passengers got on at the front of the bus.
Women moved towards the rear door to get on at the back.
When on the bus, I tried to buck the system, moving my way towards the driver but was pushed back towards the other women.
These are what orthodox Jews call “modesty buses”.
The separation system operates on 30 public bus routes across Israel.