Towards confirmatory data analysis? Deriving and analysing routing information for an origin-destination bike share dataset

Beecham, R. & Wood, J. (2014). Towards confirmatory data analysis? Deriving and analysing routing information for an origin-destination bike share dataset. Paper presented at the The 46th Annual Universities’ Transport Study Group (UTSG) Conference, 06-01-2014 - 08-01-2014, Newcastle, UK.

This is the latest version of this item.

[img]
Preview
Text - Accepted Version
Download (3MB) | Preview
[img]
Preview
Slideshow - Supplemental Material
Download (23MB) | Preview

Abstract

Data collected from urban bike share schemes allow observed travel behaviours to be analysed on a uniquely large scale. Exploring such timed origin-destination (OD) data from the London Cycle Hire Scheme (LCHS), we previously generated detailed insights into spatiotemporal patterns of travel and suggested new hypotheses for their motivation. A limitation was that with only the origins and destinations of cycle journeys, little was known about the nature and context of likely cycled routes. In this study, we use the CycleStreets routing engine to derive routing information for every OD pair made through the LCHS. From these suggested routes, we collect heuristics for the nature of each journey. Information on the number of signalled junctions encountered, on any bridges crossed, as well as a proxy for the busyness of suggested routes is recorded. We then analyse over 5 million journeys made by LCHS members during a 12-month period (September 2011 – September 2012). Focussing on LCHS journeys that involve crossing the River Thames, we observe differences in male and female cyclists’ apparent use of bridges, which appear to be strongly related to a commuting function. Studying heuristics of suggested routes over these bridges, we find some evidence to suggest that women may be underrepresented amongst commuting journeys that involve a river crossing because those very journeys are associated with relatively busy and demanding routes. We also find evidence that the nature of frequently cycled journeys involving a river crossing might explain imbalances in the direction of journeys made over the river when we select periods of more discretionary activity – when studying weekend journeys. These findings are nevertheless quite speculative. A number of confounders cannot be easily accounted for within this analysis: the economic geography of the city, spatial interactions between docking stations at particular space-times and the relative availability of transport alternatives. Perhaps most importantly, our analysis assumes that routes suggested by the routing algorithm closely reflect individuals’ actually cycled routes.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: origin-destination data; travel behaviour; routing algorithms
Subjects: H Social Sciences > HE Transportation and Communications
Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: School of Informatics > giCentre
URI: http://openaccess.city.ac.uk/id/eprint/13003

Available Versions of this Item

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics