山地城市公交系统服务在老年人群体中分配公平性评价

公交系统作为一种面向公众全体尤其是弱势群体的公共服务设施,其公平性对于促进宜居城市与公交都市建设具有较大的现实意义.本研究考虑山地城市地形变化的影响,提出了一类测度公交站点实际服务范围的新方法来修正公交服务供给公平性评价模型,并以贵阳市为例,对贵阳市公交系统服务供给在老年群体中分配的公平性进行分析.研究结果表明:①山地...

The Evaluation of Allocation Fairness to Urban Transit System Service for the Elderly in Mountainous City

Urban transit system is a public service facility oriented for the public, especially the vulnerable groups. The fairness of urban transit service is of great significance for promoting the construction of livable and transit-oriented cities. Considering the impact of terrain variation in mountainous cities, an innovative approach is proposed to measure the actual service scope of transit stops to modify the fairness evaluation model of transit service. Taking Guiyang city as an example, the fairness of transit service is analyzed for the elderly group in Guiyang. The results show that: (1) Due to the influence of the terrain of the mountainous city, the actual service scope of stops and the number of residents covered will decrease. The service scope of transit supply has decreased significantly. Considering the terrain factors, the service supply scope of transit system based on modified model is more consistent with the actual situation of mountainous cities; (2) The distribution of service supply of "Bus + BRT (Bus Rapid Transit)" transit system for the elderly group presents a circle structure, which gradually decreases from the core area to the periphery of the urban area. The fairness of transit service supply of "Bus + BRT" transit system among the elderly groups is at a great disparity level, and its distribution tends to be polarized. The spatial allocation of "Bus + BRT" transit system service supply in the elderly group is significantly unbalanced. Although the elderly group is more concentrated in the urban core, the per capita service supply of "Bus + BRT" transit system is lower than the average level. (3) When Rail Transit line 1 is added to the "Bus + BRT" transit system, the transit service supply presents an irregular "core-periphery" structure around the Rail Line 1. The polarization trend of the service supply from "Bus + BRT"transit system among the elderly group decreased, and the unbalanced spatial allocation of "Bus + BRT" transit system service supply among the elderly group was improved. Rail transit operation exerts a significant effect on the improvement of urban transit service supply. The research results could provide a theoretical reference for the transportation planning department of mountainous cities to reasonably carry out the layout of service supply facilities in urban transit system. Combined with terrain variation characteristics of mountainous city, some suggestions are also proposed to promote the fairness of the service supply of urban transit system in Guiyang.