Speaking of traffic signals and bicycles, did you know that Wisconsin biyclists can proceed through an intersection before a signal turns green if no other vehicles are present to actuate the signal and the bicyclist waits at least 45 seconds first?
4. Notwithstanding subd. 1., a motorcycle, moped, motor bicycle, or bicycle facing a red signal at an intersection may, after stopping as required under subd. 1. for not less than 45 seconds, proceed cautiously through the intersection before the signal turns green if no other vehicles are present at the intersection to actuate the signal and the operator of the motorcycle, moped, motor bicycle, or bicycle reasonably believes the signal is vehicle actuated. The operator of a motorcycle, moped, motor bicycle, or bicycle proceeding through a red signal under this subdivision shall yield the right-of-way to any vehicular traffic, pedestrian, bicyclist, or rider of an electric personal assistive mobility device proceeding through a green signal at the intersection or lawfully within a crosswalk or using the intersection. This subdivision does not affect any authorization for a bicyclist under subd. 2.
Getting back to bicycle only traffic signals, it seems that Madison is not the only city where drivers complain about bicyclists, money spent to make biking safer etc. See the comments below from a Portland Oregon newspaper after a published article on bicycle only signals in Oregon. The comments sound strikingly similar to comments in Madison papers regarding bicycle related issues and reflect the same vitriol towards bicyclists. Despite all of the negative comments in every bicycling related article in the last year, my ride to Concerts on the Square was wonderful, with all drivers acting courteously and giving the mandatory three feet before passing.
Comments from Portland Newspaper article on bike only traffic lights: