Lot's of great ideas here. Just make sure you're doing it for the safety reason instead of trying to get out of a ticket.
Cops can be understanding if you're not sure if they are a cop, especially if they're not in uniform. Ask them for their photo ID and badge with Regimental Number (RCMP), or Police Identification Number (Municipal). Go ahead and phone 911 to confirm their ID. A cop doing traffic enforcement in one of those nifty vehicles will be in uniform. Those vehicles will have emergency lights and sirens. The occasional time, you will see someone in plainclothes but their unmarked Ford Crown Victoria is a dead giveaway. If they're in plainclothes and driving a vehicle you don't normally associate with as a police car, then do a double take. Someone must have really done a bonehead move to cause that cop to initiate a stop. "Suits" rarely do traffic stops.
On the other hand, if you're refusing to stop because you're trying to get out of a ticket and end up with a police pursuit instead of using common sense, then you've opened up a whole new pandora's box. If the red and blue strobe lights and the siren still don't have you convinced, then maybe getting boxed in and having a gun pointed at you will.