Immediately roll down your window

If you are stopped by an unmarked police car, wait until the officer gets out of the car and you see her/his credentials, then roll down your window

Be patient and wait for the officer to arrive at your window

Stay calm and stay in your car and keep your hands visible at all times.

Do NOT reach for anything unless otherwise

Do NOT get out of the car unless otherwise told to do so.

Follow her/his instruction.

Do NOT argue or beg, but respect and answer her/his questions honestly.

Present all documents of officer requires, e.g. driver's license, car insurance and registration.