You are most vulnerable on your way to and from your car, and while getting into your car.  Always lock your car and roll up the windows when you get out.  Check the back seat and glance under the car before you get in.  If someone is in the back of your car, or if comeone suspicious follows you to your car, walk right past your car and go for help.

Try to park in a lighted area close to where you're going.  Leave enough space around your vehicle when parking so you can drive away easily.  When parking in public garages, try to arrive and leave at popular times, such as right after the movie lets out, or the office opens.  Returning to your car, have your keys out and ready.  At night, carry a small flashlight on your key chain to help you find the lock more quickly.  Lock your car as soon as you get in, before putting on the safety belt.

In a group, try to arrange to return to one car and drive together to the others' cars.