Dunwoody Municipal Court is one of the best courts around. When they call your name say you want to speak with the prosecutor. When you meet with him/her just ask to have the speed lowered 1 mph. That's pretty much all their is to it. Dunwoody does have heavy calendars so be prepared to wait. If you hire an attorney you'll get in, and out, very quickly as they take attorney cases first.
James L. Yeargan, Jr. is licensed to practice law in the State of Georgia. All information given is based only on Georgia law, and is not directly applicable to any other jurisdictions, states, or districts. Any answer given assumes the person who asked the question holds a Georgia Drivers License, and this license is not a commercial drivers license (CDL). This response, or any response, is not legal advice. This response, or any response, does not create an attorney/client relationship. The response is in the form of legal education and is intended to provide general information. Any state specific concerns should be directed to an attorney who is licensed to practice law in that respective state.
You should definitely plead not guilty, and consider hiring a local traffic ticket lawyer to help you work out the ticket to a lesser offense. You may be able to succeed by yourself, but a lawyer always has a better chance of getting you a better plea offer.
Do a Defensive Driving class take the certificate to Court with you, ask for a Pretrial and show the DD to the Solicitor ask for a Guilty plea to 14 over and your golden presuming you are a GA licensee. Fines are generally not negotiable.
You should consult an Attorney that handles Traffic cases in the jurisdiction you received the citation to evaluate your options.