Always have your fare ready when entering the subway. This way potential thieves never see where you keep your wallet.

Keep safe. When waiting on the platform, stand far back from the subway tracks.

An experienced pickpocket can usually pick a tourist out in a crowd. Wear your purse over one shoulder with the opening flap against your stomach so that it's impossible to get into. If you're carrying a day pack, wear it in front, kangaroo style.

Don't tempt thieves by carrying credit cards or money in a fanny pack. In a crowded car, these pouches can easily be sliced open with a razor blade and you will be none the wiser until it's too late.

Avoid remaining in an empty car. If you find yourself alone, simply exit one car and enter another at the first available stop. Remember that it's generally the center cars on the train that get the heaviest traffic and there's greater safety in numbers.

Avoid constantly referring to your subway map on the train. This only serves to advertise that you're not sure where you're going. Instead, situate yourself so that you can study the route map posted in the car. Or better still, pick a woman in close proximity and ask for help in getting off at the proper stop. Generally she'll become a mother hen and get you exactly where you want to go.

Don't draw unnecessary attention to yourself by what you wear. Be culturally correct and dress appropriately. Try saving that mini skirt for parties back home. Muted colors and conservative clothing always helps you to fade into the crowd and stay out of trouble.

Unfortunately, crowded subway cars can be perfect breeding grounds for antisocial behavior. Some men will use this opportunity to touch or pinch the female passengers close to them. If this happens to you, make a fuss in any language you choose. Point at the offender and chastise him in a loud voice. He'll probably just slink away.

However, don't become so offended that you stop paying attention to your belongings. It's a fact that women are often groped on packed subways simply to divert their attention while their purse or backpack is being pilfered. Be ever watchful, ladies. Both pinched bottoms and stolen wallets are not fun!

Special Traveler's Tip:

When using the subway in developing countries in male-dominated societies, make every effort to behave modestly. Wear a fake wedding ring to deter unwanted advances and sport sunglasses to hide your eyes. In some cultures, simply meeting a man’s gaze means that you welcome both his attention and his company.