I found it is good to find the individual who is responsible for making sure sensors are tuned right and develop a friendly relationship with them. If you don't get response, they letters to city leaders are appropriate. But you want to be able to report improperly tuned sensors as you find them, which is why knowing the best individuals to contact is important.

I don't like buttons off to the the side of the road for cyclists to push. We have them here and they mean you must scurry up to the edge of the sidewalk which is a horrible place to be for left turns and going straight. Also once a button for cyclists is in place it takes away the responsibility for the sensors to work for bikes (as I have disapointingly learned)

Al