There are a few in New York City.
Bicycles are different from cars, in any case. Traffic lights were invented in the 1920s to deal with the unprecedented danger that automobiles created in cities, and it makes sense to follow them where bicyclists are in the extreme minority, but as biking becomes more popular in many cities, we should change our transportation system to make efficient bicycle travel easier, rather than expecting bicyclists to follow rules not designed for them.
There are certainly plenty of idiotic and dangerous bicyclists, and they annoy me to no end, but expecting bicyclists to behave like little cars isn't the solution.