The city of South Portland Maine would fall into this less enlightened category. There is a left turn signal on my morning commute which does not recognize my steel bike. I wrote the city reporting the malfunctioning light, and got a reply which basically said that it would be too expensive to change the system to be able to detect cyclists. In my view this means that the signal is not functioning properly, and as such is not a signal which I have to obey. Fortunately, I hit that signal early morning when there is little or no traffic, so making my turn against the red arrow is not difficult to do.