I’m not a lawyer but I’ve consulted with an expert on the field. If you’re going to fight a speeding ticket you have to get familiar with prior case law and bring copies of that case law (3 copies. One for judge, one for plaintiff, one for yourself) to court. Refer to the case law regarding your case. The burden of proof is not on you to prove the Radar was callibrated recently and properly. The burden of proof is on the plaintiff (cop or whoever represents the cop). If you let them get away with saying they calibrated it, the judge is on the cops side. So he’ll go with that unless you challenge it. They must provide documented proof of the calibration right then and there. If the don’t have it (and I understand they usually dont), then ask the judge to dismiss. If the plaintiff asks for a continuation, request the judge dismiss immediately as it is not your responsibility that the plaintiff was not prepared. Plus, find the resources to support that in other cases, based on plaintiff lack of being prepared, the judge dismissed the case.
The key is you don’t give them any wiggle room. You must be as assertive and aggressive (but professional and polite) as the other side.
If you don’t know precedent and you allow the process to steamroll you, you’ll get fine and points. If you’re going to fight it you have to be strong and prepared. Otherwise why waste your time e?