To identity the key factors affecting ridership share of urban rail transit(URT), with the panel data of 14 cities from 2010 to 2021, the share of the URT ridership in the total public transit ridership is analyzed here to identify the key influencing factors. Considering the possible heterogeneities over city and year, a Beta regression model with city-level and yearly random effects is built to identify the key influencing factors from conventional bus, URT, and socio-economic aspects. The model is estimated with the integrated nested Laplace approximation method. The estimation results show that the number of conventional buses per 10 000 people, the URT length per 10 000 people, and the URT connectivity have significantly positive effects on the URT ridership share, while the length of bus routes per 10 000 people, GDP per capita, and road area per capita are insignificant. Besides, both city and year show significant random effects: the URT ridership shares are found to vary differently across cities, but they generally show an increasing trend during the survey period.
此外,本文采用偏差信息准则[22](deviance information criterion,DIC)DDIC、均方根误差(root mean square error,RMSE)ERMSE来评价模型表现. DDIC是最常用的评价贝叶斯模型表现的指标,它综合考虑了模型的拟合优度以及复杂程度. 均方根误差则可以表征模型预测值与真实值之间的偏差,体现其预测效果. 两者均为数值越小,表明模型拟合效果越好.
GANY H, HUANGQ L, JINGG S. Study on the evolution of urban transportation modes and traffic patterns in Guangzhou[C]//Urban Transportation Planning Academic Committee of the Urban Planning Society of China. Green,smart and integrated: proceedings of the 2021/2022 China urban transportation planning annual conference, Shanghai,2022:3084-3095.(in Chinese)
GUOX C, LÜS .Study of URT’s joint modal split assignment model on cooperative and competitive OD matrix[J].China Journal of Highway and Transport,2000(4):93-96.(in Chinese)
WANGX X .Simulation research on the evolution of new urban rail transit in traffic mode sharing[J].Railway Transport and Economy,2021,43(10):125-132.(in Chinese)
LIJ H, YANGG H, DINGY,et al .Impacts of a new rail transit line on travel mode choice[J].Journal of Transportation Systems Engineering and Information Technology,2022,22(5):135-140.(in Chinese)
[17]
KUBYM, BARRANDAA, UPCHURCHC .Factors influencing light-rail station boardings in the United States[J]. Transportation Research Part A: Policy and Practice, 2004, 38(3): 223-247.
[18]
ZHAOJ B, DENGW, SONGY,et al .Analysis of Metro ridership at station level and station-to-station level in Nanjing:an approach based on direct demand models[J]. Transportation,2014, 41(1): 133-155.
ZHUH Y, HAOY .Analysis on macro-influence factors of passenger flow of urban rail transit in Shanghai[J]. Railway Transport and Economy, 2009, 31(6): 68-70.(in Chinese)
[21]
JUNM J, CHOIK, JEONGJ E, et al. Land use characteristics of subway catchment areas and their influence on subway ridership in Seoul[J].Journal of Transport Geography, 2015, 48: 30-40.
CHENGH, DUANL W .The evolution and prediction of transportation structure for main urban area of Chongqing[J].Urban Public Transport,2021(3):41-46.(in Chinese)
LIG Q, YANGM, WANGS S. Influence factors exploration of rail station-level ridership using AFC data and POI data[J].Urban Transport of China, 2019, 17(1): 102-108.(in Chinese)
[26]
YANGC, YUC C, DONGW T, et al. Substitutes or complements?Examining effects of urban rail transit on bus ridership using longitudinal city-level data[J]. Transportation Research Part A:Policy and Practice,2023,174:103728.
CHINAASSOCIATION OF METROS. Annual statistics and analysis report of urban rail transit in 2021[J]. China Metros, 2022(7): 10-15. (in Chinese)
[29]
KONGH, ZHANGX H, ZHAOJ H .How does ridesourcing substitute for public transit?A geospatial perspective in Chengdu,China[J].Journal of Transport Geography,2020,86:102769.
[30]
MANNERINGF L, SHANKARV, BHATC R. Unobserved heterogeneity and the statistical analysis of highway accident data[J]. Analytic Methods in Accident Research,2016,11:1-16.
[31]
FERRARIS, CRIBARI-NETOF. Beta regression for modelling rates and proportions[J]. Journal of Applied Statistics, 2004, 31(7): 799-815.
[32]
RUE H, MARTINOS, CHOPINN. Approximate Bayesian inference for latent Gaussian models by using integrated nested Laplace approximations[J]. Journal of the Royal Statistical Society:Series B (Statistical Methodology),2009,71(2):319-392.
[33]
BLANGIARDOM, CAMELETTIM, BAIOG,et al. Spatial and spatio-temporal models with R-INLA[J]. Spatial and Spatio-Temporal Epidemiology, 2013, 7: 39-55.
[34]
SPIEGELHALTERD J, BESTN G, CARLINB P,et al. Bayesian measures of model complexity and fit[J]. Journal of the Royal Statistical Society:Series B (Statistical Methodology),2002, 64(4): 583-639.
DONGH Z, KONGJ J, LIUQ H .A bus departure time interval transition model considering traffic congestion[J].Journal of Transportation Systems Engineering and Information Technology,2016,16(3):101-106.(in Chinese)
基金资助
地理信息安全与应用湖南省工程研究中心开放课题资助(HNGISA2023003)
Supported by the Open Topic of Hunan Engineering Research Center of Geographic Information Security and Application(HNGISA2023003)
中央高校基本科研业务费专项资金项目(5311180 10636)
Supported by the Fundamental Research Funds for the Central Universities(531118010636)
长沙市科技计划项目(kh2201042)
Science and Technology Program of Changsha(kh2201042)