So you are saying that when the light changes to red, traffic stops (like it is supposed to) and since it is stopped it starts to back-up? Sounds normal to me. I anticipate that traffic starts to back-up when a light is red. What is your solution to the problem? I am sure that if the city made the green light longer for Mentor Avenue everyone on Chestnut would complain about how long they have to wait to get a green light.