The Public Bicycle as a Feeder Mode for Metro Commuters in the Megacity Beijing: Travel Behavior, Route Environment, and Socioeconomic Factors
Publication: Journal of Urban Planning and Development
Volume 148, Issue 1
Abstract
The last mile between metro stations and commuters’ homes or workplaces has become one of key topics in relation to metro ridership in megacities where more than 10 million people live. Although the public bicycle is widely believed to be one of new ways to solve the last-mile problem, the determinants of the use of public bicycles by commuters as a feeder mode have been scarcely discussed in the literature. This paper aims to contribute to this topic by using Beijing as a case study. Based on a travel survey among public bike users in Beijing, this study applied the binary logit model and cluster analysis to explore the determinants of public bike use around metro stations. The paper focused on three independent variables: route environment, socioeconomic factors, and travel distance. The results showed that middle-aged and medium-income commuters are more likely to use public bicycles as a feeder mode for metro transport. The built environment had significant effects on public bike use. Most of the cyclists preferred cycling routes with high directness, while high-income and high-education cyclists viewed comfort and safety of the trip as priority factors. Most trips were within 2 km, and a longer travel distance was significantly related to a higher possibility of public bicycle use. The findings and conclusions can enhance our existing understanding of public bike use as a feeder mode to solve the last mile problem and provide new evidence for policymaking on promoting public bikes in megacities.
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Acknowledgments
This paper is funded by National Natural Science Foundation of China (41925003) and Research Councils of United Kingdom Global Challenges Research (R48843).
References
An, R., R. Zahnow, D. Pojani, and J. Corcoran. 2019. “Weather and cycling in New York: The case of Citibike.” J. Transp. Geogr. 77: 97–112. https://doi.org/10.1016/j.jtrangeo.2019.04.016.
Assunçao-Denis, M-È, and R. Tomalty. 2019. “Increasing cycling for transportation in Canadian communities: Understanding what works.” Transp. Res. Part A Policy Pract. 123: 288–304.
Bachand-Marleau, J., J. Larsen, and A. M. El-Geneidy. 2011. “Much-anticipated marriage of cycling and transit: How will it work?” Transp. Res. Rec. 2247 (1): 109–117. https://doi.org/10.3141/2247-13.
Beenackers, M. A., S. Foster, C. Kamphuis, S. Titze, M. Divitini, M. Knuiman, F. van Lenthe, and B. Giles-Corti. 2012. “Taking up cycling after residential relocation: Built environment factors.” Am. J. Preventive Med. 42 (6): 610–615. https://doi.org/10.1016/j.amepre.2012.02.021.
BeijingDaily. 2020. “Statistical communique on Beijing’s national economic and social development in 2019.” May 2, 2020.
BeijingNews. 2018. “Traffic in Beijing has reached severe congestion levels during the morning rush hour on Monday.” May 2, 2020.
BMCT (Beijing Municipal Commission of Transport). 2012. “Beijing’s public bicycle service system is officially put into trial operation.” Accessed March 5, 2021. http://jtw.beijing.gov.cn/xxgk/dtxx/201206/t20120618_337001.html.
BMCT (Beijing Municipal Commission of Transport). 2018. “Discussion on “Governing the order of shared bicycles”.” Accessed March 5, 2021. http://jtw.beijing.gov.cn/zmhd/zxft/wqhg/201912/t20191209_1009855.html.
BMCT (Beijing Municipal Commission of Transport). 2019. “Beijing’s subway system transported 27.798 million passengers.” Accessed May 2, 2020. http://jtw.beijing.gov.cn/xxgk/jttj/201905/t20190514_314952.html.
Böcker, L., M. Dijst, and J. Prillwitz. 2013. “Impact of everyday weather on individual daily travel behaviours in perspective: A literature review.” Transp. Rev. 33 (1): 71–91. https://doi.org/10.1080/01441647.2012.747114.
BTI (Beijing Transport Institute). 2016. 2016 Beijing transport annual report, 25–29. Beijing: BTI.
BTI (Beijing Transport Institute). 2019. 2019 Beijing transport annual report, 29–51. Beijing: BTI.
Castillo-Manzano, J. I., L. López-Valpuesta, and A. Sánchez-Braza. 2016. “Going a long way? On your bike! Comparing the distances for which public bicycle sharing system and private bicycles are used.” Appl. Geogr. 71: 95–105. https://doi.org/10.1016/j.apgeog.2016.04.003.
Cauwenberg, J. V., I. De Bourdeaudhuij, P. Clarys, B. De Geus, and B. Deforche. 2019. “Older adults’ environmental preferences for transportation cycling.” J. Transp. Health 13: 185–199. https://doi.org/10.1016/j.jth.2019.03.014.
Cervero, R., S. Denman, and Y. Jin. 2019. “Network design, built and natural environments, and bicycle commuting: Evidence from British cities and towns.” Transp. Policy 74: 153–164. https://doi.org/10.1016/j.tranpol.2018.09.007.
Cervero, R., O. L. Sarmiento, E. Jacoby, L. F. Gomez, and A. Neiman. 2009. “Influences of built environments on walking and cycling: Lessons from bogotá.” Int. J. Sustainable Transp. 3 (4): 203–226. https://doi.org/10.1080/15568310802178314.
Chen, L., A. J. Pel, X. Chen, D. Sparing, and I. A. Hansen. 2012. “Determinants of bicycle transfer demand at metro stations: Analysis of stations in Nanjing, China.” Transp. Res. Rec. 2276 (1): 131–137. https://doi.org/10.3141/2276-16.
Chen, Y., and H. Wang. 2018. “Pricing for a last-mile transportation system.” Transp. Res. Part B Methodol. 107: 57–69. https://doi.org/10.1016/j.trb.2017.11.008.
Chillón, P., J. Molina-García, I. Castillo, and A. Queralt. 2016. “What distance do university students walk and bike daily to class in Spain.” J. Transp. Health 3 (3): 315–320. https://doi.org/10.1016/j.jth.2016.06.001.
Corcoran, J., T. Li, D. Rohde, E. Charles-Edwards, and D. Mateo-Babiano. 2014. “Spatio-temporal patterns of a public bicycle sharing program: The effect of weather and calendar events.” J. Transp. Geogr. 41: 292–305. https://doi.org/10.1016/j.jtrangeo.2014.09.003.
Daniel, F., G. Lise, K. Yan, D. Mark, F. Michel, M. Patrick, and D. Louis. 2011. “Use of a new public bicycle share program in Montreal, Canada.” Am. J. Preventive Med. 41 (1): 80–83. https://doi.org/10.1016/j.amepre.2011.03.002.
de Bas, G., I. De Bourdeaudhuij, C. Jannes, and R. Meeusen. 2008. “Psychosocial and environmental factors associated with cycling for transport among a working population.” Health Educ. Res. 23 (4): 697–708.
Dill, J., and T. Carr. 2003. “Bicycle commuting and facilities in major U.S. cities: If you build them, commuters will use them.” Transp. Res. Rec. 1828 (1): 116–123. https://doi.org/10.3141/1828-14.
Dill, J., and N. McNeil. 2013. “Four types of cyclists?: Examination of typology for better understanding of bicycling behavior and potential.” Transp. Res. Rec. 2387 (1): 129–138. https://doi.org/10.3141/2387-15.
Dill, J., and K. Voros. 2007. “Factors affecting bicycling demand: Initial survey findings from the Portland, Oregon, Region.” Transp. Res. Rec. 2031 (1): 9–17. https://doi.org/10.3141/2031-02.
El-Assi, W., M. S. Mahmoud, and K. N. Habib. 2017. “Effects of built environment and weather on bike sharing demand: A station level analysis of commercial bike sharing in Toronto.” Transportation 44 (3): 589–613. https://doi.org/10.1007/s11116-015-9669-z.
Faghih-Imani, A., N. Eluru, A. M. El-Geneidy, M. Rabbat, and U. Haq. 2014. “How land-use and urban form impact bicycle flows: Evidence from the bicycle-sharing system (BIXI) in Montreal.” J. Transp. Geogr. 41: 306–314. https://doi.org/10.1016/j.jtrangeo.2014.01.013.
Fishman, E., S. Washington, N. Haworth, and A. Watson. 2015. “Factors influencing bike share membership: An analysis of Melbourne and Brisbane.” Transp. Res. Part A Policy Pract. 71: 17–30.
Goodman, A., and J. Cheshire. 2014. “Inequalities in the London bicycle sharing system revisited: Impacts of extending the scheme to poorer areas but then doubling prices.” J. Transp. Geogr. 41: 272–279. https://doi.org/10.1016/j.jtrangeo.2014.04.004.
Guo, J. Y., C. R. Bhat, and R. B. Copperman. 2007. “Effect of the built environment on motorized and nonmotorized trip making: Substitutive, complementary, or synergistic?” Transp. Res. Rec. 2010 (1): 1–11. https://doi.org/10.3141/2010-01.
Guo, Y., and S. Y. He. 2020. “Built environment effects on the integration of dockless bike-sharing and the metro.” Transp. Res. Part D Transp. Environ. 83: 102335. https://doi.org/10.1016/j.trd.2020.102335.
Halldórsson, Á., and J. Wehner. 2020. “Last-mile logistics fulfilment: A framework for energy efficiency.” Res. Transp. Bus. Manage. 37: 100481. https://doi.org/10.1016/j.rtbm.2020.100481.
Handy, S., B. van Wee, and M. Kroesen. 2014. “Promoting cycling for transport: Research needs and challenges.” Transp. Rev. 34 (1): 4–24. https://doi.org/10.1080/01441647.2013.860204.
Handy, S. L., and Y. Xing. 2011. “Factors correlated with bicycle commuting: A study in six small U.S. cities.” Int. J. Sustainable Transp. 5 (2): 91–110. https://doi.org/10.1080/15568310903514789.
Heinen, E., K. Maat, and B. van Wee. 2011. “The role of attitudes toward characteristics of bicycle commuting on the choice to cycle to work over various distances.” Transp. Res. Part D Transp. Environ. 16 (2): 102–109. https://doi.org/10.1016/j.trd.2010.08.010.
Heinen, E., B. van Wee, and K. Maat. 2010. “Commuting by bicycle: An overview of the literature.” Transp. Rev. 30 (1): 59–96. https://doi.org/10.1080/01441640903187001.
Jan, G., R. Geoffrey, and L. S. Kai. 2008. “Promoting transportation cycling for women: The role of bicycle infrastructure.” Preventive Med. 46 (1): 55–59. https://doi.org/10.1016/j.ypmed.2007.07.010.
Janjevic, M., and M. Winkenbach. 2020. “Characterizing urban last-mile distribution strategies in mature and emerging e-commerce markets.” Transp. Res. Part A Policy Pract. 133: 164–196. https://doi.org/10.1016/j.tra.2020.01.003.
Ji, Y., Y. Fan, A. Ermagun, X. Cao, W. Wang, and K. Das. 2016. “Public bicycle as a feeder mode to rail transit in China: The role of gender, age, income, trip purpose, and bicycle theft experience.” Int. J. Sustainable Transp. 11 (4): 308–317. https://doi.org/10.1080/15568318.2016.1253802.
Ji, Y., X. Ma, M. Yang, Y. Jin, and L. Gao. 2018. “Exploring spatially varying influences on metro-bikeshare transfer: A geographically weighted poisson regression approach.” Sustainability 10 (5): 1526. https://doi.org/10.3390/su10051526.
JinwanNews. 2020. “Has shared bicycle led to serious problems?” July 25, 2021.
Julii, B., C. Rachel, L. Kathleen, and S. Charlotte. 2019. “Age, sex and other correlates with active travel walking and cycling in England: Analysis of responses to the active lives survey 2016/17.” Preventive Med. 123: 225–231. https://doi.org/10.1016/j.ypmed.2019.03.043.
Kang, L., and J. D. Fricker. 2018. “Bicycle-route choice model incorporating distance and perceived risk.” J. Urban Plann. Dev. 144 (4): 04018041. https://doi.org/10.1061/(ASCE)UP.1943-5444.0000485.
Kapser, S., and M. Abdelrahman. 2020. “Acceptance of autonomous delivery vehicles for last-mile delivery in Germany—Extending UTAUT2 with risk perceptions.” Transp. Res. Part C Emerging Technol. 111: 210–225. https://doi.org/10.1016/j.trc.2019.12.016.
Krizek, K. J., and E. W. Stonebraker. 2010. “Bicycling and transit: A marriage unrealized.” Transp. Res. Rec. 2144 (1): 161–167. https://doi.org/10.3141/2144-18.
Krygsman, S., and M. Dijst. 2001. “Multimodal trips in the Netherlands: Microlevel individual attributes and residential context.” Transp. Res. Rec. 1753 (1): 11–19. https://doi.org/10.3141/1753-02.
Krygsman, S., M. Dijst, and T. Arentze. 2004. “Multimodal public transport: An analysis of travel time elements and the interconnectivity ratio.” Transp. Policy 11 (3): 265–275. https://doi.org/10.1016/j.tranpol.2003.12.001.
Li, Q., Y. Wang, K. Li, L. Chen, and Z. Wei. 2019. “Evolutionary dynamics of the last mile travel choice.” Physica A 536: 122555. https://doi.org/10.1016/j.physa.2019.122555.
Lin, J.-J., P. Zhao, K. Takada, S. Li, T. Yai, and C.-H. Chen. 2018. “Built environment and public bike usage for metro access: A comparison of neighborhoods in Beijing, Taipei, and Tokyo.” Transp. Res. Part D Transp. Environ. 63: 209–221. https://doi.org/10.1016/j.trd.2018.05.007.
Ling, Z., C. R. Cherry, and N. Dhakal. 2017. “Factors influencing single-bicycle crashes at skewed railroad grade crossings.” J. Transp. Health 7: 54–63. https://doi.org/10.1016/j.jth.2017.01.004.
Litman, T. 2008. Land use impacts on transport how land use factors affect travel behavior. Victoria, BC: Victoria Transport Policy Institute 9-25.
Liu, H.-C., and J.-J. Lin. 2019. “Associations of built environments with spatiotemporal patterns of public bicycle use.” J. Transp. Geogr. 74: 299–312. https://doi.org/10.1016/j.jtrangeo.2018.12.010.
Liu, Y., Y. Ji, T. Feng, and Z. Shi. 2020. “Use frequency of metro-bikeshare integration: Evidence from Nanjing, China.” Sustainability 12 (4): 1426. https://doi.org/10.3390/su12041426.
Liu, Z., X. Jia, and W. Cheng. 2012. “Solving the last mile problem: Ensure the success of public bicycle system in Beijing.” Procedia Social Behav. Sci. 43: 73–78. https://doi.org/10.1016/j.sbspro.2012.04.079.
Ma, T., C. Liu, and S. Erdoğan. 2015. “Bicycle sharing and public transit: Does capital bikeshare affect metrorail ridership in Washington, D.C.?” Transp. Res. Rec. 2534 (1): 2–19.
Ma, X., Y. Ji, M. Yang, Y. Jin, and T. Xu. 2018. “Understanding bikeshare mode as a feeder to metro by isolating metro-bikeshare transfers from smart card data.” Transp. Policy 71: 57–69. https://doi.org/10.1016/j.tranpol.2018.07.008.
Mark, H., and C. Yoichi. 2008. “Active commuting and cardiovascular risk: A meta-analytic review.” Preventive Med. 46 (1): 9–13. https://doi.org/10.1016/j.ypmed.2007.03.006.
Martin, E. W., and S. A. Shaheen. 2014. “Evaluating public transit modal shift dynamics in response to bikesharing: A tale of two U.S. cities.” J. Transp. Geogr. 41: 315–324. https://doi.org/10.1016/j.jtrangeo.2014.06.026.
Ming, W. L., and R. Chris. 2008. “Inverse associations between cycling to work, public transport, and overweight and obesity: Findings from a population based study in Australia.” Preventive Med. 46 (1): 29–32. https://doi.org/10.1016/j.ypmed.2007.08.009.
Mitra, R. 2013. “Independent mobility and mode choice for school transportation: A review and framework for future research.” Transp. Rev. 33 (1): 21–43. https://doi.org/10.1080/01441647.2012.743490.
Mitra, R., and S. Nash. 2018. “Can the built environment explain gender gap in cycling? An exploration of university students’ travel behavior in Toronto, Canada.” Int. J. Sustainable Transp. 13 (2): 138–147. https://doi.org/10.1080/15568318.2018.1449919.
Møller, N. C., L. Østergaard, J. R. Gade, J. L. Nielsen, and L. B. Andersen. 2011. “The effect on cardiorespiratory fitness after an 8-week period of commuter cycling—A randomized controlled study in adults.” Preventive Med. 53 (3): 172–177. https://doi.org/10.1016/j.ypmed.2011.06.007.
Moudon, A. V., C. Lee, A. D. Cheadle, C. W. Collier, D. Johnson, T. L. Schmid, and R. D. Weather. 2005. “Cycling and the built environment, a US perspective.” Transp. Res. Part D Transp. Environ. 10 (3): 245–261. https://doi.org/10.1016/j.trd.2005.04.001.
Mueller, N., R.-R. David, C.-H. Tom, d. N. Audrey, D. Evi, G. Regine, G. Thomas, I. P. Luc, K. Sonja, and N. Mark. 2015. “Health impact assessment of active transportation: A systematic review.” Preventive Med. 76: 103–114. https://doi.org/10.1016/j.ypmed.2015.04.010.
Nair, R., E. Miller-Hooks, R. C. Hampshire, and A. Busic. 2013. “Large-scale vehicle sharing systems: Analysis of Vélib.” Int. J. Sustainable Transp. 7 (1): 85–106. https://doi.org/10.1080/15568318.2012.660115.
Ng, A., A. K. Debnath, and K. C. Heesch. 2017. “Cyclist’ safety perceptions of cycling infrastructure at un-signalised intersections: Cross-sectional survey of Queensland cyclists.” J. Transp. Health 6: 13–22. https://doi.org/10.1016/j.jth.2017.03.001.
Ni, Y., and J. Chen. 2020. “Exploring the effects of the built environment on two transfer modes for metros: Dockless bike sharing and taxis.” Sustainability 12 (5): 2034. https://doi.org/10.3390/su12052034.
Ogilvie, F., and A. Goodman. 2012. “Inequalities in usage of a public bicycle sharing scheme: Socio-demographic predictors of uptake and usage of the London (UK) cycle hire scheme.” Preventive Med. 55 (1): 40–45. https://doi.org/10.1016/j.ypmed.2012.05.002.
Parkin, J., M. Wardman, and M. Page. 2008. “Estimation of the determinants of bicycle mode share for the journey to work using census data.” Transportation 35 (1): 93–109. https://doi.org/10.1007/s11116-007-9137-5.
Riggs, W. 2019. “Perception of safety and cycling behaviour on varying street typologies: Opportunities for behavioural economics and design.” Transp. Res. Procedia 41: 204–218. https://doi.org/10.1016/j.trpro.2019.09.039.
Scott, D. M., and C. Ciuro. 2019. “What factors influence bike share ridership? An investigation of Hamilton, Ontario’s bike share hubs.” Travel Behav. Soc. 16: 50–58. https://doi.org/10.1016/j.tbs.2019.04.003.
Shelat, S., R. Huisman, and N. van Oort. 2018. “Analysing the trip and user characteristics of the combined bicycle and transit mode.” Res. Transp. Econ. 69: 68–76. https://doi.org/10.1016/j.retrec.2018.07.017.
Stinson, M. A., and C. R. Bhat. 2004. “Frequency of bicycle commuting: Internet-based survey analysis.” Transp. Res. Rec. 1878 (1): 122–130. https://doi.org/10.3141/1878-15.
Sun, G., and J. Zacharias. 2017. “Can bicycle relieve overcrowded metro? Managing short-distance travel in Beijing.” Sustainable Cities Soc. 35: 323–330. https://doi.org/10.1016/j.scs.2017.08.010.
Timmermans, E. J., E. M. Veldhuizen, T. Mäki-Opas, M. B. Snijder, J. Lakerveld, and A. E. Kunst. 2019. “Associations of neighbourhood safety with leisure-time walking and cycling in population subgroups: The HELIUS study.” Spatial Spatio-Temp. Epidemiol. 31: 100300. https://doi.org/10.1016/j.sste.2019.100300.
Titze, S., W. J. Stronegger, S. Janschitz, and P. Oja. 2008. “Association of built-environment, social-environment and personal factors with bicycling as a mode of transportation among Austrian city dwellers.” Preventive Med. 47 (3): 252–259. https://doi.org/10.1016/j.ypmed.2008.02.019.
Useche, S. A., L. Montoro, J. Sanmartin, and F. Alonso. 2019. “Healthy but risky: A descriptive study on cyclists’ encouraging and discouraging factors for using bicycles, habits and safety outcomes.” Transp. Res. Part F Traffic Psychol. Behav. 62: 587–598. https://doi.org/10.1016/j.trf.2019.02.014.
Verma, M., T. M. Rahul, P. V. Reddy, and A. Verma. 2016. “The factors influencing bicycling in the Bangalore city.” Transp. Res. Part A Policy Pract. 89: 29–40.
Wang, K., and G. Akar. 2019. “Gender gap generators for bike share ridership: Evidence from Citi Bike system in New York City.” J. Transp. Geogr. 76: 1–9. https://doi.org/10.1016/j.jtrangeo.2019.02.003.
Woodcock, J., et al. 2009. “Public health benefits of strategies to reduce greenhouse-gas emissions: Urban land transport.” Lancet 374 (9705): 1930–1943. https://doi.org/10.1016/S0140-6736(09)61714-1.
Yang, M., X. Liu, W. Wang, Z. Li, and J. Zhao. 2016. “Empirical analysis of a mode shift to using public bicycles to access the suburban metro: Survey of Nanjing, China.” J. Urban Plann. Dev. 142 (2): 05015011. https://doi.org/10.1061/(ASCE)UP.1943-5444.0000299.
Zahran, S., S. D. Brody, P. Maghelal, A. Prelog, and M. Lacy. 2008. “Cycling and walking: Explaining the spatial distribution of healthy modes of transportation in the United States.” Transp. Res. Part D Transp. Environ. 13 (7): 462–470. https://doi.org/10.1016/j.trd.2008.08.001.
Zhang, Y., T. Thomas, M. Brussel, and M. van Maarseveen. 2017. “Exploring the impact of built environment factors on the use of public bikes at bike stations: Case study in Zhongshan, China.” J. Transp. Geogr. 58: 59–70. https://doi.org/10.1016/j.jtrangeo.2016.11.014.
Zhang, Z., C. Qian, and Y. Bian. 2019. “Bicycle–metro integration for the “last mile”: Visualizing cycling in Shanghai.” Environ. Plann. A Econ. Space 51 (7): 1420–1423. https://doi.org/10.1177/0308518X18816695.
Zhao, P. 2014. “The impact of the built environment on bicycle commuting: Evidence from Beijing.” Urban Stud. 51 (5): 1019–1037. https://doi.org/10.1177/0042098013494423.
Zhao, P., and H. Hu. 2019. “Geographical patterns of traffic congestion in growing megacities: Big data analytics from Beijing.” Cities 92: 164–174. https://doi.org/10.1016/j.cities.2019.03.022.
Zhao, P., and S. Li. 2017. “Bicycle-metro integration in a growing city: The determinants of cycling as a transfer mode in metro station areas in Beijing.” Transp. Res. Part A Policy Pract. 99: 46–60.
Zhao, P., D. Liu, Z. Yu, and H. Hu. 2020. “Long commutes and transport inequity in China’s growing megacity: New evidence from Beijing using mobile phone data.” Travel Behav. Soc. 20: 248–263. https://doi.org/10.1016/j.tbs.2020.04.007.
Zuo, T., H. Wei, N. Chen, and C. Zhang. 2020. “First-and-last mile solution via bicycling to improving transit accessibility and advancing transportation equity.” Cities 99: 102614. https://doi.org/10.1016/j.cities.2020.102614.
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Journal of Urban Planning and Development
Volume 148 • Issue 1 • March 2022
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Accepted: Aug 6, 2021
Published online: Nov 9, 2021
Published in print: Mar 1, 2022
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