Originally Posted by frost

Getting out of a traffic ticket:
-Be nice!
-When asked "do you know how fast you were going?" respond with "I was paying more attention to the road than my speedometer, but it seems like I was going a safe and reasonable speed." Never admit that you were speeding, because he will note it and you will never get out of it in court.
-Ask the police officer if he is allowed to give you a warning, and state that will definitely be more careful.

If you end up with a ticket anyway:
-Ask to see the radar. If he produces it, look for a calibration sticker. (I wouldn't ask for this until you're sure youre getting a ticket, as it's likely to piss him off).
-Always try to fight it in court. You have a good chance of at least getting the amount reduced.