With the exception of traffic court. I got stuck with a bogus citation once on radar, which I am a licensed tech and was working on for the county at the time. I contested it, and the cop didn't show. The PA there said that it didn't matter that I was a licensed professional and that the conditions on the day of the citation were poor for using radar, or that the unit hadn't been calibrated recently. The judge agreed with the PA even though I provided all the evidence to the contrary. I asked to appeal, and the judge said no. I could've appealed elsewhere, but at the time it was only a $35 fine, and let me tell you I got that back in spades from the county Sheriff over the next year working on their radio system. Let's say they paid me back on about two orders of magnitude. Sometimes it helps to be the only game in town.