Accounting for uncertainty and variation in accessibility metrics for public transport sketch planning

Authors

  • Matthew Wigginton Conway Conveyal (current affiliation: School of Geographical Sciences and Urban Planning, Arizona State University) http://orcid.org/0000-0002-1210-2982
  • Andrew Byrd Conveyal
  • Michael van Eggermond Future Cities Laboratory, Singapore-ETH Centre

DOI:

https://doi.org/10.5198/jtlu.2018.1074

Keywords:

accessibility, public transport, scenario planning, probabilistic scenario comparison

Abstract

Accessibility is increasingly used as a metric when evaluating changes to public transport systems. Transit travel times contain variation depending on when one departs relative to when a transit vehicle arrives, and how well transfers are coordinated given a particular timetable. In addition, there is necessarily uncertainty in the value of the accessibility metric during sketch planning processes, due to scenarios which are underspecified because detailed schedule information is not yet available. This article presents a method to extend the concept of "reliable" accessibility to transit to address the first issue, and create confidence intervals and hypothesis tests to address the second.

Author Biography

Matthew Wigginton Conway, Conveyal (current affiliation: School of Geographical Sciences and Urban Planning, Arizona State University)

I'm a Project Manager for Analysis at Conveyal, where I develop software and work with cities on accessibility planning for their public transit systems.

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Published

2018-07-23

How to Cite

Conway, M. W., Byrd, A., & van Eggermond, M. (2018). Accounting for uncertainty and variation in accessibility metrics for public transport sketch planning. Journal of Transport and Land Use, 11(1). https://doi.org/10.5198/jtlu.2018.1074

Issue

Vol. 11 No. 1 (2018)

Section

Articles

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