After safely pulling over to the side of the road roll down your driver side window and place your hands on your steering wheel until the police officer approaches your window. Be polite and courteous even if you believe there is no valid reason for the officer to pull you over. You will not win an argument with the officer and could make a bad situation worse. The goal at this point is to get through the traffic stop as quickly and safely as possible. You can argue the legality of the traffic stop later.
If the officer asks you for your license, registration, or proof of insurance ask the officer for permission to reach into your glove box, center console, purse, wallet, or wherever the documents may be to get them.
If the officer takes your documents and returns to his cruiser remain seated and still with your hands on the steering wheel until the officer returns to your window. Do not make excessive movements or reach for anything while the officer is away from your vehicle.
If the officer gives you a citation/ticket simply take it, again you will not win any arguments with the officer. You will have an opportunity to fight the citation at a later date.
At the completion of the stop ask the officer if you should pull back into traffic before or after the officer. Safely pull back into the flow of traffic.