I can only speak about our locality. The city of Milwaukee has a bike liason. Now, I don't live in the city or county of Milwaukee, but I discovered that the bike liason is a fantastic reference for information on the steps to enact change. Do you have an equivalent in your area?

In my case, I wanted to get a walk button installed on a stop light (yes, here it is legal to run a red light if it is controlled by a senser and you can't get it to flip, but the intersection is just dangerous--50mph with blind hills).

His suggestion was to first work through your elected officials because "they have a vested interested in keeping you happy and voting for them". If that fails, to contact the city or county engineering department that is responsible for the roadway.

Good luck!