[Descripción] This dataset provides an open access, well documented global data set of roads between settlements using a consistent data model (UNSDI-T v.2) which is, to the extent possible, topologically integrated.
[Autoría] Committee on Data for Science and Technology - CODATA - Global Roads Data Development Working Group, and Center for International Earth Science Information Network - CIESIN - Columbia University.
[Web original] NASA Socioeconomic Data and Applications Center (SEDAC) https://sedac.ciesin.columbia.edu/data/set/groads-global-roads-open-access-v1  
[Formato] Vectorial; original: geodatabase y shapefile; local: geopackage.
[Resolución espacial / Escala] indeterminada.
[SRS] EPSG:4326
[Licencia] Users may use and redistribute these data without explicit written permission from CIESIN or Information Technology Outreach Services (ITOS)/University of Georgia, with the exception of roads data associated with countries that are listed in the data documentation as requiring additional credits or holding special restrictions.
[Descarga en origen] https://sedac.ciesin.columbia.edu/data/set/groads-global-roads-open-access-v1/data-download Requiere registro previo en Earthdata (https://urs.earthdata.nasa.gov/login). Los datos se descargan por continentes o global (en este caso, sólo como geodatabase).
[Descarga en local] v0901_groads (completo, 250 MB).
[Observaciones] Documentación: https://sedac.ciesin.columbia.edu/data/set/groads-global-roads-open-access-v1/docs
Recomended citation: Center for International Earth Science Information Network - CIESIN - Columbia University, and Information Technology Outreach Services - ITOS - University of Georgia. 2013. Global Roads Open Access Data Set, Version 1 (gROADSv1). Palisades, New York: NASA Socioeconomic Data and Applications Center (SEDAC). https://doi.org/10.7927/H4VD6WCT 
[Extensión geográfica]