Vibezz85,
Zinger and FlyingRon are correct. If you have a defense we can help you in validating if what you say will help but realistically if you don't have something solid to show you did not commit the violation (Normally something done by a computer I.E. Photograph, Video etc etc. Something other then just verbal testimony) you more then likely will get convicted based on the officers Testimony. What I would do if I were you is wait about 7 days before it's due. Check the court records via Internet or Phone to the local court house and see if the officer submitted the deceleration. If it's in the court file you can ask for a copy (They may want you to go in person to the clerk counter to grab a copy, a lot of the time they have a website for you to visit to get a copy online *Public record*). Read what the officer submitted and see if you have anything solid to go off of to contradict him, however again, you may still loose. If that's the case be sure to prep a Trial De Novo TR-220 before hand and send it in to reverse the conviction. Once it's filed attend trial and see if the cop shows, If not your done, if he does ask the judge to exchange your trial for traffic school and a fine reduction, In my experience they normally give you one but the last judge I got gave me bot(rare) but it happens. Knock out your traffic school and be done with it. However if you wanna go to trial you gotta have something that will move the judge to not believe the officer, soo Umm good luck with that one..