Street cleaning

I was watching the city worker who post up the signs for street cleaning. This guy posted only one sign on the entire block. Is this just being a lazy a** or is it a set up by the city? Considering the financial crisis were in, I would think they will start to tap into this area. I live a mainly Hispanic area and maybe they assume that we wouldn't noticed or say anything. If you experience anything that you would to post please feel free to do so.