I have reported this before and got no response so I am reposting.
Driving north on Winthrop at Derby, the traffic light is not in sync with the one at northbound Winthrop at Chapel. The one at Chapel turns green but the Derby light stays red. Often, when the lights turn green together the one at Derby turns red faster than the one at Chapel.
We complained several months ago that the lights did not remain green long enough for a car to make it through both intersections without speeding. Now they are all out of sync and present a hazard.