Comment by toast0

Too late to edit, but another option which may be too late for this intersection would be to add intend to cross buttons (or other ways of detecting pedestrian intent) farther from the intersection. Many intersections have vehicle detectors farther from the intersection which allows the traffic controller to reduce waiting by lengthening or reducing cycle times in anticipation of traffic that will arrive soon. For example: if there is a dominate traffic direction, the controller can idle at green, and traffic in that direction will often not have to wait. With detectors only at the light, traffic in the opposite direction would need to wait when it arrives; with further back sensors, traffic in the opposite direction can initiate a cycle change earlier and may not need to come to a stop at all. Or cycles in one direction can be lengthened if there is traffic detected at the light and at the further back sensor, which indicates potentially high demand in that direction, especially if the further back sensor stays active which could indicate vehicles are backed up all the way to that sensor. That's less applicable for a pedestrian detector, pedestrian backups are uncommon unless there's an event, at which point it's common to use police/traffic officers to direct traffic or a specialized event mode enabled by a physical control supervised by an officer; but indicators of more pedestrians does justify increasing the pedestrian cycle time.