Plane road vehicle passing space identification method

The invention provides a plane road vehicle passing space identification method, and the method comprises the steps: obtaining the range of a to-be-identified road space based on the vehicle track data collected by a road front-end sensing device, and dividing the to-be-identified road space into a plurality of grids meeting conditions; and then identifying a road space topological structure, a vehicle passing space boundary, a vehicle passable space and a channelized space by determining the occupancy state of the grids, further judging the type of the road space according to the road space topological structure, and calculating the area of the vehicle passing space. The whole identification, classification and quantification process does not need to carry out manual investigation and parameter setting on the road space in advance, does not need other additional information such as a map, is all driven by vehicle track data, ensures objectivity and consistency of vehicle passing space identification results,