Police have a life-threatening job. So indicate that you pose them no threat by turning off your engine promptly after you pull over, rolling down the window (don’t make the cop tap on it like they do in the movies), and putting both hands on the wheel or the dashboard where the cop can see them, with your license and registration ready. And when the police officer reaches your window, look him or her straight in the eye and say, “I’m sorry, officer.”