I received a bit more information about
Signs of the times: What's wrong with this picture? from the police department. All signs must be 10 feet from the roadway, and if you have a complaint, you must have the address when calling it into the police department. Example: The Speedway at 18815 W. Bluemound Rd. Signs are 2 on Bluemound and are too close to street edge. (I also wonder if the Yes person obtained permission from the owner to post their signs.)
There is a stipulation that the sign must be in good condition. Some of the signs I have seen are flopping off the wires.