This type of ticket is generally somewhat difficult to beat in court because the issue of whether or not you were commiting the infraction often comes down to a witness credibility issue (IE: Your word against the officer). With that said, you may want to take the opportunity to go to court either in the Lawrenceville Municipal Court or in Gwinnett Recorder's Court and speak to the Prosecutor about your case. With your type of driving record the Prosecutor may be willing to work with you in terms of a reduction of fine or a reduction to a non-points violation. If this is not possible, then you may wish to plead NOLO Contendre (No Contest). In Georgia, a NOLO plea can generally be used one time every 5 years to keep the points associated with a ticket off of your license. A failure to maintain lane ticket would place 3 points on your Georgia Drivers License assuming you are license in the state of Georgia.