The impact of built environment on traffic conditions based on modifiable areal unit problem
Aiming at the problem of grid unit division when analyzing the impact of the built environment on traffic conditions.Using Jinan City as the study area,population density,shopping mall density,and bus stop density are selected as evaluation indicators for the built environment,the average speed of vehicle trajectory points is selected as the evaluation indicator for traffic conditions.Considering the modifiable areal unit problem(MAUP),three square grids of 1 km×1 km,5 km×5 km,10 km×10 km,and three rectangular grids of 1 km×5 km,1 km×10 km,5 km×10 km are used to divide the study area.The correlation between traffic conditions and the built environment is analyzed using Pearson correlation coefficient,ordinary least squares(OLS),and spatial autocorrelation analysis.The best grid division scheme is determined by comparing Pearson correlation coefficients,OLS goodness of fit,and Moran's I.The results showed that when a 5 kmx5 km square grid is used as the grid unit to divide the study area,the correlation between traffic congestion and built environment is the greatest,which can better reflect the impact of built environment on traffic status.
traff traffic conditionsMAUPbuilt environmentgrid unit
万方数据
维普
