Truck blockage of signals : model application and results. Paper prepared for the 55th Annual Meeting of the Transportation Research Board TRB, Washington, D.C., January 1976.

The paper deals with a model of truck blockage of traffic signal indications used to determine the extent of expected blockage as a function of signal location. It was found that the relative effectiveness of various possible signal locations in minimizing expected truck blockage varied between one and two lane approaches and between the left and right lane of two lane approaches. Increasing volume and increasing truck percentage both result in an increase in expected blockage.