Do characteristics of walkable environments support bicycling? Toward a definition of bicycle-supported development
Keywords:Transport, Land Use, Walking, Bicycling, Built Environment
AbstractDoes walkability equate with bikeability? Through a comprehensive review of studies of the built environment and bicycling, including mode choice, route choice, safety, and urban design literature, this paper addresses this question. Previous work has raised the issue that the two modes are functionally different, despite them often being combined into a nonmotorized category, and has highlighted research challenges. Existing studies of bikeability have largely focused on infrastructure. This paper contributes to the literature on bicycling and the built environment by providing a thorough review of past research with a focus on the relationships between land use, urban form, and bicycling. Highly walkable and highly bikeable environments are quite different, and there is little consistency in the built-environment attributes associated with cycling across studies. We postulate that this inconsistency is due in part to a disconnect between theory and methods of measuring the environment for cycling along with data limitations, including sample sizes and our understanding being based mainly on cross-sectional data. Many research opportunities are present for land-use planning policies now that planning for cycling is a top priority for cities and regions across the world.
Aarts, H., and G. Schofield. 2005. Transport, urban design, and physical activity: An evidence-based update. Transportation Research Part D: Transport and Environment 10 (3): 177–196. doi:10.1016/j.trd.2004.12.001.
Akar, G., and K. J. Clifton. 2009. Influence of individual perceptions and bicycle infrastructure on decision to bike. Transportation Research Record: Journal of the Transportation Research Board 2140: 165–172. doi:10.3141/2140-18.
American Association of State Highway Transportation Officials (AASHTO). 2004. Guide for the planning, design, and operation of pedestrian facilities.
———. 2012. Guide for the development of bicycle facilities. 4th ed.
Appleyard, B. 2012. Sustainable and healthy travel choices and the built environment. Transportation Research Record: Journal of the Transportation Research Board 2303: 38–45. doi:10.3141/2303-05.
Aultman-Hall, L., F. Hall, and B. Baetz. 1997. Analysis of bicycle commuter routes using geographic information systems: Implications for bicycle planning. Transportation Research Record: Journal of the Transportation Research Board 1578: 102–110. doi:10.3141/1578-13.
Baltes, M. 1996. Factors influencing nondiscretionary work trips by bicycle determined from 1990 U.S. Census metropolitan statistical area data. Transportation Research Record: Journal of the Transportation Research Board 1538: 96–101. doi:10.3141/1538-13.
Beenackers, M. A., S. Foster, C. B. M. Kamphuis, S. Titze, M. Divitini, M. Knuiman, F. J. van Lenthe, and B. Giles-Corti. 2012. Taking up cycling after residential relocation: Built environment factors. American Journal of Preventive Medicine 42 (6): 610–15. doi:10.1016/j.amepre.2012.02.021.
Bento, A., M. Cropper, A. Mobarak, and K. Vinha. 2003. The impact of urban spatial structure on travel demand in the United States. Washington, D.C.: World Bank. http://www-wds.worldbank.org/servlet/WDSContentServer/WDSP/IB/2003/04/23/000094946_03040404262857/Rendered/PDF/multi0page.pdf.
Birk, M., K. Voros, M. Rose, R. Geller, D. Igarta, and B. Patterson. 2010. Cycle zone analysis: An innovative approach to bicycle planning. Presented at the 89th Annual Meeting of the Transportation Research Board, January 10-14, 2010.
Böcker, L., M. Dijst, and J. Prillwitz. 2013. Impact of everyday weather on individual daily travel behaviours in perspective: A literature review. Transport Reviews 33 (1): 71–91. doi:10.1080/01441647.2012.747114.
Bohannon, R. W. 1997. Comfortable and maximum walking speed of adults aged 20—79 years: Reference values and determinants. Age and Ageing 26 (1): 15–19. doi:10.1093/ageing/26.1.15.
Botma, H. 1995. Method to determine level of service for bicycle paths and pedestrian-bicycle paths. Transportation Research Record: Journal of the Transportation Research Board 1502: 38–44.
Broach, J., J. Dill, and J. Gliebe. 2012. Where do cyclists ride? A route choice model developed with revealed preference GPS data. Transportation Research Part A: Policy and Practice 46 (10): 1730–40. doi:10.1016/j.tra.2012.07.005.
Broaddus, A. 2010. Tale of two ecosuburbs in Freiburg, Germany. Transportation Research Record: Journal of the Transportation Research Board 2187: 114–122. doi:10.3141/2187-15.
Cambridge Systematics, Inc, Parsons Brinckerhoff Quade and Douglas, Inc, and S. H. Putman Associates, Inc. 1996. Making the land use transportation air quality connection: Model modifications. Volume 4, Part 2. 1000 Friends of Oregon. http://content.lib.utah.edu/utils/getfile/collection/FHWA/id/1404/filename/1405.pdf.
Cao, X., P. L. Mokhtarian, and S. L. Handy. 2009a. No particular place to go: An empirical analysis of travel for the sake of travel. Environment and Behavior 41 (2): 233–257. doi:10.1177/0013916507310318.
———. 2009b. The relationship between the built environment and nonwork travel: A case study of northern California. Transportation Research Part A: Policy and Practice 43 (5): 548–559. doi:10.1016/j.tra.2009.02.001.
Cervero, R., and M. Duncan. 2003. Walking, bicycling, and urban landscapes: Evidence from the San Francisco bay area. American Journal of Public Health 93 (9): 1478–1483. doi: 10.2105/AJPH.93.9.1478
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. International Journal of Sustainable Transportation 3 (4): 203–26. doi:10.1080/15568310802178314.
Chatman, D. G. 2009. Residential choice, the built environment, and nonwork travel: Evidence using new data and methods. Environment and Planning A 41 (5): 1072–89. doi:10.1068/a4114.
Clifton, K. J., A. D. Livi Smith, and D. Rodriguez. 2007. The development and testing of an audit for the pedestrian environment. Landscape and Urban Planning 80 (1–2): 95–110. doi:10.1016/j.landurbplan.2006.06.008.
Clifton, K. J., P. A. Singleton, C. D. Muhs, R. J. Schneider, and P. Lagerwey. 2014. Improving the representation of the pedestrian environment in travel demand models: Phase I. Project Report OTREC-RR-13-08. Portland, Oregon: Oregon Transportation Research and Education Consortium (OTREC). http://trec.pdx.edu/research/project/510.
Cunningham, G., and Y. L. Michael. 2004. Concepts guiding the study of the impact of the built environment on physical activity for older adults: A review of the literature. American Journal of Health Promotion 18 (6): 435–43. doi:10.4278/0890-1171-18.6.435.
Damant-Sirois, G., M. Grimsrud, and A. El-Geneidy. 2014. What’s your type: A multidimensional cyclist typology. Transportation 41: 1153-1169. doi:10.1007/s11116‐014‐9523‐8.
Davis, W. J. 1987. Bicycle safety evaluation. PhD Dissertation, Auburn University.
———. 1995. Bicycle test route evaluation for urban road conditions. Presented at the ASCE Transportation Congress: Civil Engineers--Key to the World of Infrastructure, October 22-26, 1995.
De Geus, B., I. de Bourdeaudhuij, C. Jannes, and R. Meeusen. 2008. Psychosocial and environmental factors associated with cycling for transport among a working population. Health Education Research 23 (4): 697–708. doi:10.1093/her/cym055.
Dill, J., and T. Carr. 2003. Bicycle commuting and facilities in major U.S. cities: If you build them, commuters will use them. Transportation Research Record: Journal of the Transportation Research Board 1828: 116–123. doi:10.3141/1828-14.
Dill, J., and N. McNeil. 2013. Four types of cyclists? Examining a typology to better understand bicycling behavior and potential. Presented at the 92nd Annual Meeting of the Transportation Research Board, January 13-17, 2013.
Dixon, L. 1996. Bicycle and pedestrian level-of-service performance measures and standards for congestion management systems. Transportation Research Record: Journal of the Transportation Research Board 1538: 1–9. doi:10.3141/1538-01.
Emery, J., and C. Crump. 2003. The WABSA project: Assessing and improving your community’s walkability and bikeability. Chapel Hill, NC: University of North Carolina.
Epperson, B. 1994. Evaluating suitability of roadways for bicycle use : Toward a cycling level-of-service standard. Transportation Research Record 1438: 9–16.
Ewing, R., and R. Cervero. 2010. Travel and the built environment. Journal of the American Planning Association 76 (3): 265–294.
Fajans, J., and M. Curry. 2001. Why bicyclists hate stop signs. ACCESS Magazine 1 (18). http://escholarship.org/uc/item/39h8k0x9.
Ferrell, C., and S. Mathur. 2012. Influences of neighborhood crime on mode choice. Transportation Research Record: Journal of the Transportation Research Board 2320: 55–63. doi:10.3141/2320-07.
Fishman, E., S. Washington, and N. Haworth. 2013. Bike share: A synthesis of the literature. Transport Reviews 33 (2): 148–165. doi:10.1080/01441647.2013.775612.
Forsyth, A., and K. Krizek. 2011. Urban design: Is there a distinctive view from the bicycle? Journal of Urban Design 16 (4): 531–549. doi:10.1080/13574809.2011.586239.
Frank, L. D., M. Bradley, S. Kavage, J. Chapman, and T. K. Lawton. 2008. Urban form, travel time, and cost relationships with tour complexity and mode choice. Transportation 35 (1): 37–54.
Frank, L. D., and P. O. Engelke. 2005. Multiple impacts of the built environment on public health: Walkable places and the exposure to air pollution. International Regional Science Review 28 (2): 193–216. doi:10.1177/0160017604273853.
Garrard, J., S. Handy, and J. Dill. 2012. Women and cycling. City Cycling, 211–233.
Gatersleben, B., and H. Haddad. 2010. Who Is the typical bicyclist? Transportation Research Part F: Traffic Psychology and Behaviour 13 (1): 41–48. doi:10.1016/j.trf.2009.10.003.
Green Lane Project. 2013. Innovative urban bikeway design: A survey of cities. http://www.bikesbelong.oli.us/usdotreport.pdf.
Greenwald, M. J. 2009. SACSIM modeling-elasticity results: Draft. Fehr and Peers Associates.
Handy, S. L., Y. Xing, and T. J. Buehler. 2010. Factors associated with bicycle ownership and use: A study of six small U.S. cities. Transportation 37 (6): 967–985.
Harkey, D., D. Reinfurt, and M. Knuiman. 1998. Development of the bicycle compatibility index. Transportation Research Record: Journal of the Transportation Research Board 1636: 13–20. doi:10.3141/1636-03.
Heath, G. W., R. C. Brownson, J. Kruger, R. Miles, K. E. Powell, and L. T. Ramsey. 2006. The effectiveness of urban design and land use and transport policies and practices to increase physical activity: A systematic review. Journal of Physical Activity & Health 3: S55.
Heinen, E., K. Maat, and B. van Wee. 2011. Day-to-day choice to commute or not by bicycle. Transportation Research Record: Journal of the Transportation Research Board 2230: 9–18. doi:10.3141/2230-02.
Heinen, E., B. van Wee, and K. Maat. 2010. Commuting by bicycle: An overview of the literature. Transport Reviews 30 (1): 59–96. doi:10.1080/01441640903187001.
Highway capacity manual 2010. 2010. Washington, D.C.: Transportation Research Board of the National Academies.
Humpel, N., N. Owen, and E. Leslie. 2002. Environmental factors associated with adults’ participation in physical activity: A review. American Journal of Preventive Medicine 22 (3): 188–99. doi:10.1016/S0749-3797(01)00426-3.
Jensen, S. 2007. Pedestrian and bicyclist level of service on roadway segments. Transportation Research Record: Journal of the Transportation Research Board 2031: 43–51. doi:10.3141/2031-06.
Jonnalagadda, N., J. Freedman, W. A. Davidson, and J. D. Hunt. 2001. Development of microsimulation activity-based model for San Francisco: Destination and mode choice models. Transportation Research Record: Journal of the Transportation Research Board 1777: 25–35. doi:10.3141/1777-03.
Kim, S., and G. F. Ulfarsson. 2008. Curbing automobile use for sustainable transportation: Analysis of mode choice on short home-based trips. Transportation 35 (6): 723–737. doi:10.1007/s11116-008-9177-5.
Kitamura, R., P. L. Mokhtarian, and L. Laidet. 1997. A micro-analysis of land use and travel in five neighborhoods in the San Francisco bay area. Transportation 24 (2): 125–158.
Kockelman, K. 1997. Travel behavior as function of accessibility, land use mixing, and land use balance: Evidence from San Francisco bay area. Transportation Research Record: Journal of the Transportation Research Board 1607: 116–25. doi:10.3141/1607-16.
Krizek, K. J., S. L. Handy, and A. Forsyth. 2009. Explaining changes in walking and bicycling behavior: Challenges for transportation research. Environment and Planning B: Planning and Design 36: 725–740.
Krizek, K. J., and P. J. Johnson. 2006. Proximity to trails and retail: Effects on urban cycling and walking. Journal of the American Planning Association 72 (1): 33–42. doi:10.1080/01944360608976722.
Kuzmyak, J. R., C. Baber, and D. Savory. 2006. Use of walk opportunities index to quantify local accessibility. Transportation Research Record: Journal of the Transportation Research Board 1977: 145–53. doi:10.3141/1977-19.
Landis, B., T. Petritsch, H. Huang, and A. Do. 2004. Characteristics of emerging road and trail users and their safety. Transportation Research Record: Journal of the Transportation Research Board 1878: 131–39. doi:10.3141/1878-16.
Landis, B. W. 1994. Bicycle interaction hazard score : A theoretical model. Transportation Research Record 1438: 3–8.
Larsen, J., and A. El-Geneidy. 2010. Build it but where? A GIS methodology for guiding the planning of new cycling facilities. Presented at the 89th Annual Meeting of the Transportation Research Board, January 10-14, 2010.
Lee, C., and A. Vernez-Moudon. 2004. Physical activity and environment research in the health field: Implications for urban and transportation planning practice and research. Journal of Planning Literature 19 (2): 147–81. doi:10.1177/0885412204267680.
Lowry, M. B., D. Callister, M. Gresham, and B. Moore. 2012. Assessment of communitywide bikeability with bicycle level of service. Transportation Research Record: Journal of the Transportation Research Board 2314: 41–48. doi:10.3141/2314-06.
Lusk, A. C., P. G. Furth, P. Morency, L. F. Miranda-Moreno, W. C. Willett, and J. T. Dennerlein. 2011. Risk of injury for bicycling on cycle tracks versus in the street. Injury Prevention 17 (2): 131–135. doi:10.1136/ip.2010.028696.
McCormack, G., B. Giles-Corti, A. Lange, T. Smith, K. Martin, and T. J. Pikora. 2004. An update of recent evidence of the relationship between objective and self-report measures of the physical environment and physical activity behaviours. Journal of Science and Medicine in Sport 7 (1, Supplement 1): 81–92. doi:10.1016/S1440-2440(04)80282-2.
McMillan, T. E. 2005. Urban form and a child’s trip to school: The current literature and a framework for future research. Journal of Planning Literature 19 (4): 440–456. doi:10.1177/0885412204274173.
McNeil, N. 2011. Bikeability and the 20-min neighborhood. Transportation Research Record: Journal of the Transportation Research Board 2247: 53–63. doi:10.3141/2247-07.
Menghini, G., N. Carrasco, N. Schüssler, and K. W. Axhausen. 2010. Route choice of cyclists in Zurich. Transportation Research Part A: Policy and Practice 44 (9): 754–765. doi:10.1016/j.tra.2010.07.008.
Muhs, C. D., and K. J. Clifton. 2014. Bicycling is different: Built environment relationships to non-work travel. Presented at the 93rd Annual Meeting of the Transportation Research Board, January 12-16, 2014.
Næss, P. 2005. Residential location affects travel behavior—but how and why? The case of Copenhagen metropolitan area. Progress in Planning 63 (2): 167–257.
Nelson, A., and D. Allen. 1997. If you build them, commuters will use them: Association between bicycle facilities and bicycle commuting. Transportation Research Record: Journal of the Transportation Research Board 1578: 79–83. doi:10.3141/1578-10.
Owen, N., N. Humpel, E. Leslie, A. Bauman, and J. F. Sallis. 2004. Understanding environmental influences on walking: Review and research agenda. American Journal of Preventive Medicine 27 (1): 67–76. doi:10.1016/j.amepre.2004.03.006.
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. doi:10.1007/s11116-007-9137-5.
Parsons Brinckerhoff Quade and Douglas, Inc, Cambridge Systematics, Inc, and Calthorpe Associates. 1993. Making the Land Use Transportation Air Quality Connection: The Pedestrian Environment. Volume 4A. 1000 Friends of Oregon. http://ntl.bts.gov/DOCS/tped.html.
Petritsch, T., B. Landis, H. Huang, P. McLeod, D. Lamb, W. Farah, and M. Guttenplan. 2007. Bicycle level of service for arterials. Transportation Research Record: Journal of the Transportation Research Board 2031: 34–42. doi:10.3141/2031-05.
Pikora, T., B. Giles-Corti, F. Bull, K. Jamrozik, and R. Donovan. 2003. Developing a framework for assessment of the environmental determinants of walking and cycling. Social Science & Medicine 56 (8): 1693–1703. doi:10.1016/S0277-9536(02)00163-6.
Plaut, P. O. 2005. Non-motorized commuting in the US. Transportation Research Part D: Transport and Environment 10 (5): 347–356. doi:10.1016/j.trd.2005.04.002.
Pucher, J., and R. Buehler. 2005. Cycling trends & policies in Canadian cities. World Transport Policy & Practice 11 (1): 43–61.
———. 2006. Why Canadians cycle more than Americans: A comparative analysis of bicycling trends and policies. Transport Policy 13 (3): 265–279. doi:10.1016/j.tranpol.2005.11.001.
Rajamani, J., C. Bhat, S. Handy, G. Knaap, and Y. Song. 2003. Assessing impact of urban form measures on nonwork trip mode choice after controlling for demographic and level-of-service effects. Transportation Research Record: Journal of the Transportation Research Board 1831: 158–165.
Rietveld, P., and V. Daniel. 2004. Determinants of bicycle use: Do municipal policies matter? Transportation Research Part A: Policy and Practice 38 (7): 531–550. doi:10.1016/j.tra.2004.05.003.
Rodrı́guez, D. A., and J. Joo. 2004. The relationship between non-motorized mode choice and the local physical environment. Transportation Research Part D: Transport and Environment 9 (2): 151–173. doi:10.1016/j.trd.2003.11.001.
Rybarczyk, G., and C. Wu. 2013. Examining the impact of urban morphology on bicycle mode choice. Environment and Planning B: Planning and Design 40. http://www.envplan.com/abstract.cgi?id=b37133.
Saelens, B. E., and S. L. Handy. 2008. Built environment correlates of walking: A review. Medicine and Science in Sports and Exercise 40 (7): 550–566.
Saelens, B. E., J. F. Sallis, and L. D. Frank. 2003. Environmental correlates of walking and cycling: Findings from the transportation, urban design, and planning literatures. Annals of Behavioral Medicine 25 (2): 80–91.
San Francisco Department of Public Health. 2008. The Pedestrian Environmental Quality Index (PEQI): An Assessment of the Physical Condition of Streets and Intersections. Draft Methods Report. Program on Health, Equity and Sustainability, Environmental Health Section.
Schneider, R. J. 2013. Theory of routine mode choice decisions: An operational framework to increase sustainable transportation. Transport Policy 25: 128–137.
Schneider, R. J. 2011. Understanding sustainable transportation choices: Shifting routine automobile travel to walking and bicycling, PhD Dissertation, University of California, Berkeley. http://www.escholarship.org/uc/item/06v2g6dh.
Sener, I. N., N. Eluru, and C. R. Bhat. 2009. An analysis of bicycle route choice preferences in Texas, US. Transportation 36 (5): 511–539. doi:10.1007/s11116-009-9201-4.
Singleton, P. A., R. J. Schneider, C. D. Muhs, and K. J. Clifton. 2014. The pedestrian index of the environment (PIE): Representing the walking environment in planning applications. Presented at the 93rd Annual Meeting of the Transportation Research Board, January 12-16, 2014.
Singleton, P. A, and K. J. Clifton. 2014. Exploring synergy in bicycle and transit use: Empirical evidence at two scales. Presented at the 93rd Annual Meeting of the Transportation Research Board, January 12-16, 2014.
Soltani, A., and A. Allan. 2006. Analyzing the impacts of microscale urban attributes on travel: Evidence from suburban Adelaide, Australia. Journal of Urban Planning and Development 132 (3): 132–137. doi:10.1061/(ASCE)0733-9488(2006)132:3(132).
Sorton, A., and T. Walsh. 1994. Bicycle stress level as a tool to evaluate urban and suburban bicycle compatibility. Transportation Research Record 1438: 17–24.
Stinson, M., and C. Bhat. 2003. Commuter bicyclist route choice: Analysis using a stated preference survey. Transportation Research Record: Journal of the Transportation Research Board 1828: 107–115. doi:10.3141/1828-13.
Teschke, K., M. A. Harris, C. C. Reynolds, M. Winters, S. Babul, M. Chipman, M. D. Cusimano, et al. 2012. Route infrastructure and the risk of injuries to bicyclists: A case-crossover study. American Journal of Public Health 102 (12): 2336–2343. doi:10.2105/AJPH.2012.300762.
Tilahun, N. Y., D. M. Levinson, and K. J. Krizek. 2007. Trails, lanes, or traffic: Valuing bicycle facilities with an adaptive stated preference survey. Transportation Research Part A: Policy and Practice 41 (4): 287–301. doi:10.1016/j.tra.2006.09.007.
Turner, S., C. Shafer, and W. Stewart. 1997. Bicycle suitability criteria for state roadways in Texas. Research Report 3988-S. College Station, TX: Texas Department of Transportation, Texas A&M University.
Van Acker, V., P. Mokhtarian, and F. Witlox. 2011. Going soft : On how subjective variables explain modal choices for leisure travel. European Journal of Transport and Infrastructure Research 11 (2): 115–146.
Vernez-Moudon, A. 1997. Urban morphology as an emerging interdisciplinary field. Urban Morphology 1 (1): 3–10.
Vernez-Moudon, A., 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. Transportation Research Part D: Transport and Environment 10 (3): 245–261. doi:10.1016/j.trd.2005.04.001.
WalkScore. 2013. “WalkScore.” http://www.walkscore.com.
Wardman, M., M. Tight, and M. Page. 2007. Factors influencing the propensity to cycle to work. Transportation Research Part A: Policy and Practice 41 (4): 339–350. doi:10.1016/j.tra.2006.09.011.
Wendel-Vos, G. C. W., A. J. Schuit, R. De Niet, H. C. Boshuizen, W. Saris, and D. Kromhout. 2004. Factors of the physical environment associated with walking and bicycling. Medicine and Science in Sports and Exercise 36 (4): 725–730.
Winters, M., M. Brauer, E. M. Setton, and K. Teschke. 2010. Built environment influences on healthy transportation choices: Bicycling versus driving. Journal of Urban Health 87 (6): 969–993. doi:10.1007/s11524-010-9509-6.
Winters, M., M. Brauer, E. M. Setton, and K. Teschke. 2013. Mapping bikeability: A spatial tool to support sustainable travel. Environment and Planning B: Planning and Design 40 (5): 865–883. doi:10.1068/b38185.
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. Transportation Research Part D: Transport and Environment 13 (7): 462–470. doi:10.1016/j.trd.2008.08.001.
Zhang, M. 2004. The role of land use in travel mode choice: Evidence from Boston and Hong Kong. Journal of the American Planning Association 70 (3): 344–360.
Zhao, P. 2014. The impact of the built environment on bicycle commuting: Evidence from Beijing. Urban Studies 51 (5): 1019–1037. doi:10.1177/0042098013494423.
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