Traffic unit safety evaluation method based on incomplete elastic collision theory

The invention discloses a traffic unit safety evaluation method based on a non-complete elastic collision theory, and the method comprises the steps: 1, selecting a proper straight line conflict risk index, and constructing a non-straight line conflict risk index; 2, establishing a one-dimensional collision model under linear collision and a two-dimensional collision model under nonlinear collision according to a non-complete elastic collision theory, and constructing collision severity index extension based on the models; 3, calculating the conflict risk and severity of the indexes for identifying the traffic units under different parameters, and collecting the accident rate and accident severity of the same place; and 4, selecting the optimal parameter of the index, and evaluating the safety level of the traffic unit. According to the method, the dangerousness before and after the vehicle arrives at the conflict point can be accurately described, the influence of vehicle deformation recovery in the collisio