Driving path planning method and system based on accident risk cost

The invention discloses a driving path planning method and system based on accident risk cost, and the method comprises the steps: obtaining historical traffic accident data, and carrying out the preprocessing of the data; establishing an accident risk cost evaluation index system according to historical traffic accident data; determining the weight of each index, and determining the accident risk cost of each road section according to an accident risk quantification model; and constructing an example network, and based on the starting point, the terminal point, the accident risk cost of each road section and the travel time of each road section, adopting a K shortest path solving algorithm to obtain an optimal path. According to traffic accident data, a risk evaluation system is constructed from accident characteristics, an accident risk quantification model based on an entropy weight method is established, and a path planning algorithm comprehensively considering risk cost and passing time is designed, so t