Capacity Analysis of Unsignalized T-Shaped Intersection by Using Cellular Automata Model

T-shaped intersections are very common in urban street network for the constraints of space or other factors. They join the main road and the minor road together. In this paper, the capacity of unsignalized T-shaped intersection is investigated by a cellular automata model. Vehicles approaching from different direction will conflict with each other, because they are not controlled by traffic lights. The crash avoiding rule, in which the priorities are given to the driving-ahead vehicle and the vehicle on the main street, is used to dispose the conflicts. The flux on each lane influenced by the vehicle from other direction is studied in detail.