Highway network connectivity key section identification method based on vulnerability

The invention belongs to the field of road network traffic safety, and relates to a vulnerability-based road network connectivity key section identification method, which comprises the following steps of: acquiring multi-source data of a target road network region; road alignment change points are set as road section division points based on the road alignment data, and static coarse-grained division of road sections is carried out; counting feature parameters of minimum road section units based on different features of the road sections, constructing feature vectors of the road section units, and performing dynamic fine-grained division on the road sections by using an ordered clustering algorithm; quantizing the vulnerability of the road section according to the road section characteristic value; and constructing a road network Bayesian network structure model to carry out key road section identification. According to the method, the influence of various factors on the road section is fused, the limitation