Something I did to be a speeding ticket I read about on the web. I don't remember the link, but it was basicly this; I filed a "Motion for Discovery". I asked for any and all evidence related to my case (including all paperwork on the radar gun and police officer training). In Oregon a radar gun is required to be calibrated twice a year and a police officer must be trained on the specific gun. Well when I received all the paperwork I had asked for, something was missing. It seams as though the officer hadn't received any official training on the gun. The law reads that the officer must be trained, without evidence of training the judge had to drop the case.