Evaluation of pre-signals at oversaturated signalized

Transportation Research Record. PDF   ECitation
One of the major causes of bus delays in urban environments are signalized intersections. The use of a pre-signal has been proposed in order to utilize the full capacity of the main signal while still providing bus priority. The goal of this research is to quantify the benefits of using pre-signals in terms of system-wide total person hours of delays specifically for over saturated intersections.