The amount of green time programmed for each movement at a signal varies by time of day. Sometimes there is more traffic at a signal than the signal can handle, and the signal is over its capacity. In these situations, the Traffic Department attempts to time the signals to equalize delays for conflicting movements. At other times green time can be moved from one movement to a conflicting movement, realizing that improving one movement hurts another. Increasing green for one movement requires decreasing the amount of green time for another movement.
Requests for timing changes at individual intersections should be referred to the Traffic Engineering Division. Here too, information needed for a signal technician to investigate a requested change is what day of the week and at what time of day a problem occurs. Call the Traffic Engineering Division at 707-543-3814.