Influence of urban land use and road network morphology on interregional highway traffic accident
JIN Ziheng
ZHAI Lin
Abstract：In order to analyze the extent of the influence of urban land use and road network morphology on interregional highway traffic accidents,33 towns along five highways(G503,G302,G334,G203,S514)in a northern city are selected as research subjects.The topology characteristic parameters are obtained by modeling the urban road network,and the intensity of land use and the degree of mixed land use are calculated using points of interest(POI).The random forest model is employed to analyze the influence of independent variables on interregional highway traffic accidents,and the correlation between independent variables and interregional highway traffic accidents is analyzed using negative binomial regression.The results indicate that the feature importances for the number of POIs,betweenness centrality of the interregional highways,degree of the interregional highways,number of urban nodes,and degree of mixed land use in the random forest model are 0.62,0.14,0.11,0.07,and 0.06,respectively.The number of POIs has the greatest influence on interregional highway traffic accidents,while betweenness centrality and the number of nodes of the interregional highways have some influence.The number of urban nodes and the degree of mixed land use have weaker influence on interregional highway traffic accidents.In the negative binomial regression method,the betweenness centrality of the interregional highways and the number of POIs are significantly and positively associated with interregional highway traffic accidents,while the number of urban nodes,degree of the interregional highways,and degree of mixed land use are not significantly correlated.The conclusions of the random forest model are close to those of the negative binomial regression analysis.The random forest model adapts well to the non-additive and non-linear characteristics of the independent variables and is suitable in analyzing the causes of traffic accidents.Controlling urban scale and reasonably planning urban road networks are of great significance in reducing the risk of interregional highway traffic accidents and improving traffic safety.
Keywords：interregional highway traffic accidentroad network morphologyPOIrandom forest model
Publication Date：2025-07-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：8( 19-25,43 )