Fighting parking tickets requires that you are either able to prove your innocence or have discovered a technicality which is grounds for a dismissal. A ticket is presumed proof of your guilt, and your word will almost never be taken over that of the ticketing officer. What you need is evidence that proves your case. In addition, you should begin collecting this evidence as soon as you discover the parking ticket. Assuming the information that clears you is at the scene, document it. Whether it is writing the conditions surrounding the ticket down or taking photographs make sure you do it clearly, so that a judge can easily see your evidence. Of course, do be sure you look closely at your ticket as well, because any major errors are grounds for a dismissal. If your ticket is the result of not having a parking permit either seen or displayed, then you usually, can just take your permit to the parking bureau along with your ticket and have the case dismissed.