Design speeds and acceleration characteristics of bicycle traffic for use in planning, design and appraisal
This paper reports the results of a study of a cohort of cyclists to determine their speed and acceleration characteristics relative to gradient and other influencing factors in order to supply data for planners, designers and appraisers of cycle infrastructure schemes. A cohort of everyday cyclists was supplied with a global positioning system device and a heart rate monitor and asked to collect data from their journeys in Leeds, UK. The analysis determines the cyclists' speeds and accelerations at every point on their journey and elevation data, corroborated by mapping information, was used to determine the gradient. Two linear regression models of speed and acceleration were estimated and show that the influence of a downhill gradient on speed is less pronounced than the effect of an uphill gradient. The results indicate an eighty-fifth percentile speed on the flat of 22Â kph, and for a downhill gradient of 3%, 25Â kph. The power required to cycle has been estimated and shows that cyclists deliver around 150Â W on the flat, but that this rises to around 250Â W climbing hills. Mean acceleration on the flat is 0.231Â m/s2 and the average power output over the acceleration phase, which is of mean duration 26Â s, is approximately 120Â W. Air resistance accounts for approximately 70% of the resistive force when cycling at design speed. It is recommended that designers adopt 25Â kph as a design speed for gradients less than 3%, but that consideration should be given to design speeds of up to 35Â kph for steeper gradients. Free-flow speeds in this range should be used when modelling mode and route choices and in benefit appraisal.
If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.
Volume (Year): 17 (2010)
Issue (Month): 5 (September)
|Contact details of provider:|| Web page: http://www.elsevier.com/wps/find/journaldescription.cws_home/30473/description#description|
|Order Information:|| Postal: http://www.elsevier.com/wps/find/supportfaq.cws_home/regional|
References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- John Parkin & Mark Wardman & Matthew Page, 2008. "Estimation of the determinants of bicycle mode share for the journey to work using census data," Transportation, Springer, vol. 35(1), pages 93-109, January.
- Wardman, Mark & Tight, Miles & Page, Matthew, 2007. "Factors influencing the propensity to cycle to work," Transportation Research Part A: Policy and Practice, Elsevier, vol. 41(4), pages 339-350, May.
When requesting a correction, please mention this item's handle: RePEc:eee:trapol:v:17:y:2010:i:5:p:335-341. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Zhang, Lei)
If references are entirely missing, you can add them using this form.