I'm sorry to say, but whether you where following the flow of traffic, if you are over the speed limit, you are breaking the law, along with everyone else. Now if you try to say use that as the defense, you will loose. And you are problably wondering why you? Think of it this way: Have you ever been fishing? Have you ever Caught ALL of the fish? You where just the unlucky fish that got caught.
A a questions for you: How much traffic was there, if during rush hour, how can the police officer actually prove you are the car that he radared (if a radar was used)?
Now, I don't know about where you are from, but here in Washington state, if they radar you, you have the legal right to 1) see the readout of the radar at the time of the citation, and if they didn't lock it, or can't show you, it isn't admisable. 2) You have the right to question the calibration of the Radar, and request calibration records, to make them prove that the radar was accurate and calibrated to local/state laws. 3) If you where paced, they must pace you for, I believe, 2 miles (I may be wrong about the distance on this) and you have the legal right to request logs on the calibraton of the speedometer in the police car.
To finish this, here is a good one for you :
I had an insurance man that got off on a ticket because the police officer said he paced him for 3 miles, however, the insurance man saw the police officer writing a ticket 1 mile back to another motorist, so he requested to see the mile marker writen on the ticker prior to his, when they learned that the officer lied, and could not have paced him for 3 miles as he stated (his own ticket book proved this) the case was thrown out. I don't know if the police officer was repromanded. IMO he should have been dismissed for fraud, since he knownly falsified legal documents.
Now, IMO, you have already admitted to speeding, so I would be a responsible man about it, and admit that you are guilty, and get it reduced if possible, and pay the fine.
Regards,
Daniel