Abstract
Since 2017, cities across the US have introduced shared e-scooter sharing programs that often co-exist with docked bikeshare services. Previous research has compared e-scooter and bikeshare service geographies and travel patterns, but few studies examine how shared e-scooter systems might substitute or supplement docked bikeshare trips. To fill the research gap, we treated the implementation of pilot shared e-scooter programs in the City of Chicago and the Boston metro area as quasi-natural experiments to assess how e-scooters influence docked bikeshare ridership. We obtained docked bikeshare trip data in each city and applied a difference-in-difference model with a propensity score matching method. Specifically, we investigated the effects of e-scooter sharing on docked bikeshare ridership in communities of concern, emphasizing the heterogeneous treatment effects and potential equity implications for developing micromobility systems. Results show that total micromobility trips--bikeshare plus shared e-scooters--in Chicago and Boston rose by 50% and 55%, respectively, during the pilot program. Despite the overall positive story for micromobility, shared e-scooters generally exerting negative effects on docked bikeshare ridership in both cities, with the exceptions of stations located in communities of concern, which experienced positive impacts on ridership. E-scooter pilots likewise yielded effects on how and who utilized bikeshare. Following shared e-scooter implementation, bikeshare trips lasting over 30 min increased in frequency. While the introduction of e-scooters reduced the total number of trips by both male and female subscribers, the number of trips made by male riders within communities of concern experienced an upswing. Results yield implications for policymakers seeking to increase access to micromobility services, particularly in communities of concern.
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Divvy system data: https://ride.divvybikes.com/system-data. Bluebikes system data: https://www.bluebikes.com/system-data. Neighborhood-level sociodemographic data: https://www.census.gov/programs-surveys/acs/data.html. Neighborhood-level built environment data: https://www.epa.gov/smartgrowth/smart-location-mapping#SLD. Employment data: https://lehd.ces.census.gov/. Transit data: https://gtfs.org/.
References
Baltimore City Department of Transportation (BCDOT).: Dockless vehicle pilot program. https://transportation.baltimorecity.gov/sites/default/files/Pilot%20evaluation%20report%20FINAL.pdf (2019)
Barajas, J.M.: How equitable is bikesharing? Exploring population characteristics and access to employment. Annual Meeting of the Transportation Research Board, Washington DC (2018)
Barbour, N., Zhang, Y., Mannering, F.: A statistical analysis of bike sharing usage and its potential as an auto-trip substitute. J. Transp. Health 12, 253–262 (2019). https://doi.org/10.1016/j.jth.2019.02.004
Blazanin, G., Mondal, A., Asmussen, K.E., Bhat, C.R.: E-scooter sharing and bikesharing systems: an individual-level analysis of factors affecting first-use and use frequency. Transp. Res. Part C Emerg. Technol. 135, 103515 (2022). https://doi.org/10.1016/j.trc.2021.103515
Brookhart, M.A., Schneeweiss, S., Rothman, K.J., Glynn, R.J., Avorn, J., Stürmer, T.: Variable selection for propensity score models. Am. J. Epidemiol. 163(12), 1149–1156 (2006). https://doi.org/10.1093/aje/kwj149%JAmericanJournalofEpidemiology
Campbell, K.B., Brakewood, C.: Sharing riders: how bikesharing impacts bus ridership in New York City. Transp. Res. Part A Policy Pract. 100, 264–282 (2017). https://doi.org/10.1016/j.tra.2017.04.017
Caspi, O., Smart, M.J., Noland, R.B.: Spatial associations of dockless shared e-scooter usage. Transp. Res. Part D: Transp. Environ. 86, 102396 (2020). https://doi.org/10.1016/j.trd.2020.102396
Chen, L.-T., Hsu, Y.-W.: Socio-ecological predictors of frequent bike share trips: do purposes matter? Int. J. Environ. Res. Public Health 17(20), 7640 (2020)
Chen, Z., Guo, Y., Stuart, A.L., Zhang, Y., Li, X.: Exploring the equity performance of bike-sharing systems with disaggregated data: a story of southern Tampa. Transp. Res. Part A Policy Pract. 130, 529–545 (2019). https://doi.org/10.1016/j.tra.2019.09.048
Chen, M., Wang, D., Sun, Y., Waygood, E.O.D., Yang, W.: A comparison of users’ characteristics between station-based bikesharing system and free-floating bikesharing system: case study in Hangzhou, China. Transportation 47(2), 689–704 (2020a). https://doi.org/10.1007/s11116-018-9910-7
Chen, Z., van Lierop, D., Ettema, D.: Dockless bike-sharing systems: what are the implications? Transp. Rev. 40(3), 333–353 (2020b). https://doi.org/10.1080/01441647.2019.1710306
Christoforou, Z., de Bortoli, A., Gioldasis, C., Seidowsky, R.: Who is using e-scooters and how? Evidence from Paris. Transp. Res. Part D Transp. Environ. 92, 102708 (2021). https://doi.org/10.1016/j.trd.2021.102708
City of Chicago.: 2020 E-scooter pilot evaluation. https://www.chicago.gov/content/dam/city/depts/cdot/Misc/EScooters/2021/2020%20Chicago%20E-scooter%20Evaluation%20-%20Final.pdf (2021).
City of Santa Monica.: Shared mobility device pilot program - user survey results. https://www.smgov.net/Departments/PCD/Transportation/Shared-Mobility-Services/ (2019)
Ewing, R., Cervero, R.: Travel and the Built Environment. J. Am. Plann. Assoc. 76(3), 265–294 (2010). https://doi.org/10.1080/01944361003766766
Fearnley, N., Berge, S.H., Johnsson, E.:. Shared e-scooters in Oslo. https://www.toi.no/getfile.php/1352254/ (2020)
Fishman, E.: Bikeshare: a review of recent literature. Transp. Rev. 36(1), 92–113 (2016). https://doi.org/10.1080/01441647.2015.1033036
Gavin, K., Bennett, A., Auchincloss, A.H., Katenta, A.: A brief study exploring social equity within bicycle share programs. Transp. Lett. 8(3), 177–180 (2016)
Goodman, A., Cheshire, J.: 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 (2014). https://doi.org/10.1016/j.jtrangeo.2014.04.004
Guo, Y., Zhou, J., Wu, Y., Li, Z.: Identifying the factors affecting bike-sharing usage and degree of satisfaction in Ningbo, China. Plos One 12(9), e0185100 (2017)
Hosford, K., Winters, M.: Who are public bicycle share programs serving? An evaluation of the equity of spatial access to bicycle share service areas in Canadian cities. Transp. Res. Rec. 2672(36), 42–50 (2018)
Jiao, J., Bai, S.: Understanding the shared e-scooter travels in Austin, TX. ISPRS Int. J. Geo-Inf. 9(2), 135 (2020)
Jin, F., Cheng, Y., Li, X., & Hu, Y.J.: The effect of dockless bike-sharing on public transportation: an empirical study. HEC Paris Research Paper No. MOSI-2018-1312, Kelley School of Business Research Paper(18–81), 18–40. https://doi.org/10.2139/ssrn.3257617 (2018)
Klein, N., Brown, A., Thigpen, C.: Clutter and compliance: scooter parking interventions and perceptions. Active Travel Stud. (2023). https://doi.org/10.16997/ats.1196
Kong, H., Jin, S.T., Sui, D.Z.: Deciphering the relationship between bikesharing and public transit: modal substitution, integration, and complementation. Transp. Res. Part D: Transp. Environ. 85, 102392 (2020). https://doi.org/10.1016/j.trd.2020.102392
Lazarus, J., Pourquier, J.C., Feng, F., Hammel, H., Shaheen, S.: Micromobility evolution and expansion: understanding how docked and dockless bikesharing models complement and compete – a case study of San Francisco. J. Transp. Geogr. 84, 102620 (2020). https://doi.org/10.1016/j.jtrangeo.2019.102620
Li, X., Zhang, Y., Sun, L., Liu, Q.: Free-floating bike sharing in jiangsu: users’ behaviors and influencing factors. Energies 11(7), 1664 (2018)
Li, H., Zhang, Y., Ding, H., Ren, G.: Effects of dockless bike-sharing systems on the usage of the London Cycle Hire. Transp. Res. Part A Policy Pract. 130, 398–411 (2019). https://doi.org/10.1016/j.tra.2019.09.050
Li, A., Zhao, P., Liu, X., Mansourian, A., Axhausen, K.W., Qu, X.: Comprehensive comparison of e-scooter sharing mobility: evidence from 30 European cities. Transp. Res. Part D: Transp. Environ. 105, 103229 (2022). https://doi.org/10.1016/j.trd.2022.103229
Liu, L., Miller, H.J.: Measuring the impacts of dockless micro-mobility services on public transit accessibility. Comput. Environ. Urban Syst. 98, 101885 (2022). https://doi.org/10.1016/j.compenvurbsys.2022.101885
Ma, X., Ji, Y., Yuan, Y., Van Oort, N., Jin, Y., Hoogendoorn, S.: A comparison in travel patterns and determinants of user demand between docked and dockless bike-sharing systems using multi-sourced data. Transp. Res. Part A Policy Pract. 139, 148–173 (2020). https://doi.org/10.1016/j.tra.2020.06.022
McKenzie, G.: Spatiotemporal comparative analysis of scooter-share and bike-share usage patterns in Washington, D.C. J. Transp. Geogr. 78, 19–28 (2019). https://doi.org/10.1016/j.jtrangeo.2019.05.007
McNeil, N., Dill, J., MacArthur, J., & Broach, J.: Breaking barriers to bike share: Insights from bike share users (NITC-RR-884c). https://doi.org/10.15760/trec.191 (2017).
McNeil, N., Dill, J., MacArthur, J., Broach, J., & Howland, S.:. Breaking barriers to bike share: Insights from residents of traditionally underserved neighborhoods (NITC-RR-884b). https://doi.org/10.15760/trec.176 (2017)
Meng, S., Brown, A.: Docked vs. dockless equity: comparing three micromobility service geographies. J. Transp. Geogr. 96, 103185 (2021). https://doi.org/10.1016/j.jtrangeo.2021.103185
Mooney, S.J., Hosford, K., Howe, B., Yan, A., Winters, M., Bassok, A., Hirsch, J.A.: Freedom from the station: spatial equity in access to dockless bike share. J. Transp. Geogr. 74, 91–96 (2019). https://doi.org/10.1016/j.jtrangeo.2018.11.009
National Association of City Transportation Officials (NACTO).: Shared Micromobility in the U.S.: 2018. https://nacto.org/shared-micromobility-2018/ (2018)
National Association of City Transportation Officials (NACTO).: Shared Micromobility in the U.S.: 2019. https://nacto.org/shared-micromobility-2019/ (2019)
Nickkar, A., Banerjee, S., Chavis, C., Bhuyan, I.A., Barnes, P.: A spatial-temporal gender and land use analysis of bikeshare ridership: the case study of Baltimore City. City Cult. Soc. 18, 100291 (2019). https://doi.org/10.1016/j.ccs.2019.100291
Nikiforiadis, A., Paschalidis, E., Stamatiadis, N., Raptopoulou, A., Kostareli, A., Basbas, S.: Analysis of attitudes and engagement of shared e-scooter users. Transp. Res. Part D: Transp. Environ. 94, 102790 (2021). https://doi.org/10.1016/j.trd.2021.102790
Orr, B., MacArthur, J., & Dill, J.: The Portland e-scooter experience. https://archives.pdx.edu/ds/psu/27613 (2019)
Paul, P., Carlson, S.A., Carroll, D.D., Berrigan, D., Fulton, J.E.: Walking for transportation and leisure among U.S. adults-national health interview survey 2010. J. Phys. Act. Health 12, S62–S69 (2015). https://doi.org/10.1123/jpah.2013-0519
Portland Bureau of Transportation (PBOT).: 2019 e-scooter findings report. https://www.portland.gov/transportation/escooterpdx/2019-e-scooter-report-and-next-steps (2019)
Qian, X., Jaller, M.: Bikesharing, equity, and disadvantaged communities: a case study in Chicago. Transp. Res. Part A Policy Pract. 140, 354–371 (2020). https://doi.org/10.1016/j.tra.2020.07.004
Qian, X., Jaller, M., Niemeier, D.: Enhancing equitable service level: which can address better, dockless or dock-based Bikeshare systems? J. Transp. Geogr. 86, 102784 (2020). https://doi.org/10.1016/j.jtrangeo.2020.102784
Rayaprolu, S., Venigalla, M.: Motivations and mode-choice behavior of micromobility users in Washington, DC. J. Mod. Mobil. Syst. 1, 110–118 (2020)
Reilly, K.H., Noyes, P., Crossa, A.: From non-cyclists to frequent cyclists: factors associated with frequent bike share use in New York City. J. Transp. Health 16, 100790 (2020). https://doi.org/10.1016/j.jth.2019.100790
San Francisco Municipal Transportation Agency (SFMTA).: Powered scooter share mid-pilot evaluation. https://www.sfmta.com/sites/default/files/reports-and-documents/2019/08/powered_scooter_share_mid-pilot_evaluation_final.pdf (2019)
Sanders, R.L., Branion-Calles, M., Nelson, T.A.: To scoot or not to scoot: findings from a recent survey about the benefits and barriers of using E-scooters for riders and non-riders. Transp. Res. Part A Policy Pract. 139, 217–227 (2020). https://doi.org/10.1016/j.tra.2020.07.009
Shaheen, S., Bell, C., Cohen, A., & Yelchuru, B.: Travel behavior: shared mobility and transportation equity. https://www.fhwa.dot.gov/policy/otps/shared_use_mobility_equity_final.pdf (2017)
Smith, C. S., Oh, J.-S., & Lei, C.: Exploring the equity dimensions of US bicycle sharing systems [Tech Report]. https://rosap.ntl.bts.gov/view/dot/30675 (2015)
U.S. Census Bureau.: Modes less traveled—bicycling and walking to work in the United States: 2008–2012. https://www2.census.gov/library/publications/2014/acs/acs-25.pdf (2014)
Ursaki, J., & Aultman-Hall, L.: Quantifying the equity of bikeshare access in U.S. Cities [Tech Report]. https://rosap.ntl.bts.gov/view/dot/36739 (2015)
Wang, K., Akar, G., Chen, Y.-J.: Bike sharing differences among millennials, Gen Xers, and baby boomers: lessons learnt from New York City’s bike share. Transp. Res. Part A Policy Pract. 116, 1–14 (2018). https://doi.org/10.1016/j.tra.2018.06.001
Wang, Y., Wu, J., Chen, K., Liu, P.: Are shared electric scooters energy efficient? Commun. Transp. Res. 1, 100022 (2021). https://doi.org/10.1016/j.commtr.2021.100022
Wang, K., Qian, X., Fitch, D.T., Lee, Y., Malik, J., Circella, G.: What travel modes do shared e-scooters displace? A review of recent research findings. Transp. Rev. (2022). https://doi.org/10.1080/01441647.2021.2015639
Wang, J., & Lindsey, G.: Measuring equity in bike share programs: a case study of the twin cities. Transportation Research Board 97th Annual Meeting. https://trid.trb.org/view/1497105 (2018).
Weschke, J., Oostendorp, R., Hardinghaus, M.: Mode shift, motivational reasons, and impact on emissions of shared e-scooter usage. Transp. Res. Part D Transp. Environ. 112, 103468 (2022). https://doi.org/10.1016/j.trd.2022.103468
Whitfield, G.P., Paul, P., Wendel, A.M.: Active Transportation Surveillance — United States, 1999–2012. Morb. Mortal. Wkl. Rep. Surveill. Summ. 64(7), 1–17 (2015)
Xin, F., Chen, Y., Wang, X., Chen, X.: Cyclist satisfaction evaluation model for free-floating bike-sharing system: a case study of Shanghai. Transp. Res. Rec. 2672(31), 21–32 (2018). https://doi.org/10.1177/0361198118770193
Yan, X., Yang, W., Zhang, X., Xu, Y., Bejleri, I., Zhao, X.: A spatiotemporal analysis of e-scooters’ relationships with transit and station-based bikeshare. Transp. Res. Part D Transp. Environ. 101, 103088 (2021). https://doi.org/10.1016/j.trd.2021.103088
Yang, H., Huo, J., Bao, Y., Li, X., Yang, L., Cherry, C.R.: Impact of e-scooter sharing on bike sharing in Chicago. Trans. Res. Part A Policy Pract. 154, 23–36 (2021). https://doi.org/10.1016/j.tra.2021.09.012
Younes, H., Zou, Z., Wu, J., Baiocchi, G.: Comparing the temporal determinants of dockless scooter-share and station-based bike-share in Washington, D.C. Transp. Res. Part A Policy Pract. 134, 308–320 (2020). https://doi.org/10.1016/j.tra.2020.02.021
Zhou, X.: Understanding spatiotemporal patterns of biking behavior by analyzing massive bike sharing data in Chicago. PLoS One 10(10), e0137922 (2015). https://doi.org/10.1371/journal.pone.0137922
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SM: conceptualization, data curation, formal analysis, investigation, methodology, validation, visualization, writing—original draft, writing—reviewing & editing. AB: conceptualization, investigation, methodology, supervision, writing—reviewing & editing.
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Meng, S., Brown, A. How shared e-scooter programs affect docked bikeshare ridership in communities of concern: a tale of two cities. Transportation (2024). https://doi.org/10.1007/s11116-024-10473-w
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DOI: https://doi.org/10.1007/s11116-024-10473-w