Computation models of capacity influenced by non-power-driven vehicle at signalized intersection

In order to quantify the effect of non-power-driven vehicle on the capacity of signalized intersection, the influence ways of non-power-driven vehicle were analyzed, and the time durations of various influences were estimated, saturation flow rates in various conditions were obtained on the basis of speed-flow relation, and the capacity models of typical signalized intersection were built.Computation result indicates that the proposed models yield lower left-turn and through capacities compared with HCM method, right-turn capacities predicted by the models essentially agree with those by HCM method in low non-power-driven vehicle volume condition, and are higher in high non-power-driven vehicle volume conditions.So the models are applicable to calculate the capacity of signalized intersections influenced by non-power-driven vehicle.