In Munich, much is based upon the honor system. The U-Bahn/S-bahn, for example, has a punch system when you enter, and no one on the train checks. Rather, a roaming set of DB police come through occasionally to ensure you have tickets. I have been checked 2-3 times in the hundred or so rides I’ve taken the train. Yet the horror of being pulled off a train in front of a crowd of strangers is enough to ensure most people are compliant. Parking in Munich is sort of the same way. Most people pay to park because of the fear of getting caught, yet the fine for such offense is generally much lower than the cost of parking – often 5 euros. Given that you are only occasionally ticketed, and it doesn’t count against your record – my suggestions is just welcome that meter maid. Her bark is far worse than the bite.