People need to check alternate and flexible routes, or even alter their time of arrival. Staggering school openings and dismissal schedules is a viable option worthy of consideration (versus a rush to spend money on new lights, roads). Implementation of the latter suggestion would certainly raise the hue and cry to a new, higher level.
Waiting through two or three stoplight cycles to turn left should ring a bell and cause you to consider an alternate route or another time (and maybe adjust your patience level a notch).
Donald E. Fischer