Driving Too Fast for Road Conditions
Question: My son was ticketed with driving too fast for road conditions. The air and roads were dry so there were no road conditions. He was in an unfamiliar area at night and was in a roundabout which had a steep ditch on one side. As he was unfamiliar with the roundabout, he simply turned into the curb instead of following the curve of the road, and ended up over the curb and slightly down the embankment.

Question: The police officer used a radar gun to check my speed. According to him, there are no records for radar calibration on it. This is a real, live issue for my trial. If the radar gun does not have service records, then how do we know that it is functioning correctly?