My question involves court procedures for the state of: Arizona
I'm facing a $100.00 fine for violating my city's (Surprise) dog park rules. The city has four dog parks. Two for small dogs and two for large dogs. The small dog parks have signs limiting the weight to 20 lbs. My dogs are over 20 lbs. and were in one of the small dog parks. We have been going there for over 4 years and there has been never an incident or complaint. There are no city ordinances or laws (verified) establishing this limit nor is there a law or ordinance number posted on the sign. Is this limitation legal and or enforceable?