This study integrated the multi-source data including road network topology, traffic data, and OpenStreetMap (OSM), to construct a seven-item and three-dimensional evaluation index system covering serviceability, topological elasticity, and accessibility. The CRITIC-TOPSIS integrated evaluation method was employed to achieve a multidimensional quantitative assessment of urban road network functionality. Using the Xincheng District of Hohhot as a case study, a topological network model was constructed to quantitatively calculate various indicators and conduct visual analysis. Through comprehensive scoring ranking and Spearman’s correlation coefficient tests, the stability and applicability of the evaluation method were validated. Research indicated that significant structural contradictions existed in the road networks of the study areas, i.e., the central districts feature densely distributed road service facilities, high saturation levels, and strong topological connectivity, primarily serving as major traffic corridors, while the peripheral distribution roads exhibited weakened functionality and low utilization rates. It is recommended to implement targeted regulatory measures, including hierarchical optimization of road network functions, improved traffic management, and enhanced supporting infrastructure, to elevate overall operational efficiency and spatial equity.
本研究所使用的数据包括路网拓扑、道路交通、道路属性、开放街道地图(Open Street Map,简写为OSM)4类数据,数据来源见表2。基于呼和浩特市OSM道路数据筛选出新城区246条主要道路数据,针对原始路网多车道多向通行、区域详略不均及部分辅助道路复杂等问题,进行简化并补全缺失路段与路名信息,提升数据完整性。经ArcGIS合并、简化等处理,最终提取70条城区主要道路作为研究基础数据(图3-b)。
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