Always be aware of your surroundings and the people nearby. Avoid dark places at night, deserted streets, convenience stores, fast food restaurants and drive-ins at night. Don't attract attention by being noisy or by talking loudly among your friends in your native language. Obey traffic signals and police officers if you are driving. Avoid stopping for gas in unfamiliar areas or neighborhoods, especially at night.
Most crimes happen at night.
Make sure you have your keys in a safe place at all times. Don't carry anything on your key chain that could identify you. Always lock your house, your car, your bicycle, your belongings, even if you leave them for only a few minutes. Don't leave anything valuable in your car. If you carry a book bag or a backpack, never leave it out of your sight.