Women should not put themselves in peril by living as pedestrians, James LaFond says:
For all of the carjackers and drunk drivers out there it is still far more dangerous for a woman to be alone on foot, or on foot at all, than it is to drive. To the extent that driving places women on the menu of the many violent criminals that stalk them, the trend is for the lady to be attacked while stopped, while getting in and out of her vehicle, and while walking to and from her vehicle. While I respect no man who makes the claim without having the balls to walk the streets of his town, I do not think any woman should walk alone.
The dilemma that the women I have interviewed expound on consistently is not so much that men are larger and stronger, but that they are faster. This is a huge issue. The foot speed disparity between ordinary men and women is even greater than that between male and female athletes. In contrast a man on the street will be bigger than some assailants, smaller and faster than others, and enjoy a rough parity with others. Possibly the best self-defense for women is to have them play ball and run track & field as children and teens, so that they at least have the option of flight.