Abstract：In the lane change decision-making stage, scratch and rear-end accidents may occur owing to drivers' miss judgments on the relative distances and velocities. In order to clarify the formation mechanism of drivers' decision making and traffic conflict in the lane change process, based on the motion relationship of related vehicles and driving expectation, the boundary conditions are limited, and a lane change game concept is put forward. The finite and zero-sum grey game model with mixed strategies is introduced, and the model algorithm is subsequently derived. Strategy selection and income characteristics of the drivers in the game are researched by sample selection and data processing analysis under the condition of real-world experiments. Analysis shows that when the traffic conflict between lane change object vehicle and following vehicle in the target lane is inevitably, the ideal and optimal strategy for the object vehicle is slowing down and waiting, while corresponding strategy for the game opponent is passing by the critical conflict point with an acceleration, so as to give the consideration to driving safety and traveling time, then achieve the goal of global optimality. The results may give corresponding theoretical support to the formation mechanism of the traffic conflicts and allocation of right-of-way in a lane change process.
2011, Vol. 29 
