Take Precautions:

Know your environment.

Get to know who belongs in the vicinity of your home or workplace and who does not.
Keep your eyes open for anything out of the ordinary.
Lock all doors and close windows before driving off.
Try to vary your route to places you visit regularly.
Ensure all your mirrors are adjusted to give you an optimal all-round view of your surroundings.
Try to stop about 5m behind the car in front of you at a stop sign or traffic light – it makes for an easier getaway if trouble arises.

Don’t be fooled by:

False appeals for help.
“Accidents” such as having you car rammed from behind.
Someone trying to get help from a stationary car.
Your electric gates being jammed

“Courtesy of ADT – Internet article”