考虑社会公平性的都市圈通勤公交可达性评价OA

[Background]Owing to ongoing urbanization,China's metropolitan areas have expand-ed rapidly in number and scale.Accessibility and inequality in cross-jurisdictional bus services within metropolitan areas have become major factors shaping transport equity for urban residents.[Objective]This study examines the accessibility and equity of commuting bus services in metropol-itan areas.It aims to reduce the disparities in bus service levels across jurisdictions and promote so-cial equity.[Method]Based on the conventional cumulative-opportunity accessibility model,this study incorporates socioeconomic and spatial structure factors such as the per capita disposable in-come of urban residents,the number of metro-bus transfer opportunities,and the point of interest(POI)density of firms and housing.Subsequently,a commuting bus accessibility framework that ac-counts for social equity is developed.Based on this framework,the equity of transport resource allo-cation is quantified.[Data]The spatial locations of bus stops and routes;road network data from OpenStreetMap;and the per capita disposable income of urban residents from statistical yearbooks,as well as gridded population and housing price data.[Conclusion]Commuting accessibility in the Beijing-Northern Three Counties metropolitan area shows a clear center-periphery divide,with pe-ripheral areas indicating relatively limited access to opportunities.For long-distance commuting,bus services provide more inclusive coverage and can improve equity while increasing the overall acces-sibility.In general,Beijing has higher accessibility,although its uneven resource distribution creates an equity gap.Meanwhile,the Northern Three Counties show a more balanced spatial match be-tween transport supply and housing.[Application]On the supply side,edge-core commuting corri-dors should be prioritized.Routes and headways should be optimized to strengthen rapid connec-tions.To reinforce basic services in the Northern Three Counties,more bus resources should be di-rected to areas with low-to-mid housing prices and concentrated demand.On the operations side,dif-ferentiated services and smart scheduling should be implemented.These actions should be paired with demand-management tools such as commuter-fare discounts.Collectively,they can improve the equity of access opportunities across population groups in the metropolitan area.