Construction and application of urban mobility diagnosis model

Abstract

Abstract The scientific diagnosis of urban mobility is beneficial to urban planning to solve urban problems appropriately, especially traffic problems. The existing models for urban accessibility or mobility are confined by data sources and operation conditions. They stay on the level of the static and local analysis but lack of quantitative description of the overall mobility of the city. A standard model of urban mobility covering the node-to-node accessibility relation among all nodes in a city is proposed based on the Internet data and algorithm programs. On this basis, a reference system model is established which is based on the city center, the nearest commercial center, the nearest park and the nodes of the external traffic facilities. In the end, the downtown area of Shanghai is taken as an example and the overall mobility and spatial layout of the city are analyzed and diagnosed by using the reference system model and the network map data. The structural characteristics of the overall accessibility of the downtown area of Shanghai are revealed, such as high inside and low outside, the east–west differences, the finger radiation and other structural features. Besides, the main nodes that require to be improved for the liquidity are indicated.