Abstract:
:Good access to resources and opportunities is essential for sustainable development. Improving access, especially in rural areas, requires useful measures of current access to the locations where these resources and opportunities are found. Recent work has developed a global map of travel times to cities with more than 50,000 people in the year 2015. However, the provision of resources and opportunities will differ across the broad spectrum of settlements that range from small towns to megacities, and access to this spectrum of settlement sizes should also be measured. Here we present a suite of nine global travel-time accessibility indicators for the year 2015, at approximately one-kilometre spatial resolution, for a range of settlement size classes. We validated the travel-time estimates against journey times from a Google driving directions application across 1,511 2° × 2° tiles representing 47,812 journeys. We observed very good agreement, though our estimates were more frequently shorter than those from the Google application with a median difference of -13.7 minutes and a median percentage difference of -16.9%.
journal_name
Sci Datajournal_title
Scientific dataauthors
Nelson A,Weiss DJ,van Etten J,Cattaneo A,McMenomy TS,Koo Jdoi
10.1038/s41597-019-0265-5subject
Has Abstractpub_date
2019-11-07 00:00:00pages
266issue
1issn
2052-4463pii
10.1038/s41597-019-0265-5journal_volume
6pub_type
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