Decision-making method for car driver to change lanes on eight-lane expressway

The invention discloses an eight-lane expressway car driver lane changing decision-making method, which comprises the following steps of analyzing a car lane changing behavior of an eight-lane expressway, and selecting a basic lane changing index; selecting a lane changing decision variable according to the basic lane changing index; constructing an eight-lane expressway lane change decision model, and training the lane change decision model by using the lane change decision variables; the lane changing decision model adopts a DBN model based on CRBM, takes a lane changing decision variable as input and takes a lane changing decision as output; the lane changing decision comprises lane keeping, left lane changing or right lane changing; and determining a lane changing decision of the driver by using the trained lane changing decision model. According to the method, the neural network is utilized to construct the eight-lane expressway driver lane changing decision model, and the influence of driver factors in