But more intelligently for who? Faster traffic flow is not an unadulterated good. In my view we probably want areas with many intersections to have slower traffic, not faster. Faster traffic means less safety, especially for non-car users and could trigger induced demand, eliminating any GHG benefits.
It all depends on the model and what the inputs and goals are. I’ve noticed that signals optimally timed for vehicle traffic are often more difficult and dangerous for cyclists and pedestrians.