I received speeding ticket - for going 78mph in a 55mph zone. The ticket states that the speed limit was "posted", the officer used "lidar" and my speed was "estimated". The offense was a 90/17 ticket in the state of Massachusetts. The ticket is for $230. The officer had his vehicle parked on the side of road (in the breakdown lane), he was standing outside of his vehicle, and waved me to pull over. I had my vehicle on cruise control and was going with the flow of traffic.

This is my first offense. I have requested a court hearing, what is the best way to fight this?