An Integrated Network Modeling for Road Maps

Critical-location identification on a road map is very helpful to assign traffic resources reasonably in traffic simulations. To simultaneously identify the critical levels of roads and junctions in a road map by the same measure of centrality, we define a novel road network modeling concept: integrated graph, in which both junctions and roads are abstracted as nodes. Based on this method, we analyze the importance of locations in a small road network and Beijing’s main-road network. The results show that this modeling method of road networks is feasible and efficient.