Gulshan Ji how this is implemented also give suggestions on this one also.
First let us see what is the issue with women safety. Men also travel in bus and train. even a man is not stronger than three or more other men. Thus men also are not safe. A man can also be physically assaulted. Still the women are more unsafe.
The reason is that women fear more about modesty and chastity. The exaggerated notion of female chastity should be fought. A woman's chastity is also like man's celibacy. If a man is not bothered about outrage, woman should also not be. She should not feel guilty of herself even after rape and should lead normal life as before.
As regards self defence, women may also train themselves in fighting techniques like karate as men do.