Healthcare Accessibility for the Elderly by Bus Based on Inferring Seeking Healthcare Activities
To conduct a precise assessment of elderly passengers'accessibility to healthcare services via bus,this study constructs bus travel chains based on travel data from elderly cards,infers healthcare activities from bus travel chains,and determines the actual travel demands and durations.Real-time bus arrival data is introduced to reflect the impact of the actual bus operation level on the healthcare accessibility.To reflect the entire travel process,a real travel cost matrix including waiting,travel,and transfer times is constructed.Considering the difference in the service supply capacity of different hospitals,the comprehensive service capacity index is constructed.Hierarchical service radius and the Gaussian distance decay function are introduced,and the calculation method of accessibility to healthcare services by bus based on the improved two-step floating catchment area method is further proposed.Taking the area within Beijing's Six Ring Road as a case study,the results show a diminishing trend in healthcare service accessibility for the elderly,gradually decreasing from the city center towards peripheral areas.The distribution of accessibility in the peripheral areas also shows spatial heterogeneity,in which the eastern and western areas beyond the Fifth Ring Road exhibit relatively favorable accessibility,while the northern and southeastern zones exhibit comparatively poorer accessibility.The mean accessibility during peak hours is significantly lower than that during off-peak hours in all regions.This study provides insights for improving the accessibility of elderly to healthcare services and the level of aging adaptation of bus system.
urban trafficobserved accessibilitytwo-step floating catchment area methodelderly passengerstravel chain for seeking healthcare
万方数据
维普
