The Initial Observation and Contact: An arrest for DUI usually begins when a law enforcement officer comes in contact with a driver while the car is moving. Law enforcement will watch for certain behaviors before they stop a driver under suspicion of DUI.
Tip #1. Don’t drink and drive! : If you have been drinking, call a taxi or have a friend drive you home.
Tip #2. If you do Drive, Don’t park near the bar!: Police officers or their agents routinely drive through popular bar parking lots and note descriptions of cars in the parking lot and wait for the car to leave, then invent some reason to stop the car. Never park near the bar!
DUI – DRIVING UNDER THE INFLUENCE:
Vehicle Code Section 23152(a) – DUI.
It is unlawful for a person who is under the influence of any alcoholic beverage to drive a vehicle.