You can be charged with speeding even if you are driving with the safe flow of traffic. It has happened many times, and if it has happened to you, you can join the ranks of drivers who are successfully contesting speeding tickets. Some states accept that as a valid defense, while others don't. Find out if your state is one that does before you use that defense. A lawyer can help, and so can sitting in traffic court for a day and hearing, which defenses work in your jurisdiction. You must be sure that you know exactly what you have been charged with. Just like a lawyer, you can "discover" what evidence the arresting officer is using and counter it. You must also follow all the rules in your jurisdiction for contesting a ticket. In some states, you must pay the fine before you go to court; if you win your case, the money will be refunded.