Global Roads Open Access Data Set

Project Description
A consortium of groups, led by International Council for Science's Committee on Data for Science and Technology (ICSU-CODATA) Global Roads Data Development Working Group, is developing a digital, public domain global road map under the name Global Roads Open Access Data Set (gROADS). gROADS will be:

- globally consistent (in terms of the underlying data model and attribute coding);
- spatially accurate (~50m positional accuracy);
- topologically integrated;
- suitable for mapping at an approximate scale of 1:250,000;
- focused on roads between settlements (not streets);
- up-to-date and with the possibility of frequent updates;
- well documented; and
- freely distributed (on an "attribution only" basis).

The gROADS initiative is sponsored by CODATA, is an approved task of the UN-GAID e-SDDC (UN Global Alliance on ICT for Development Open Access to and Application of Scientific Data in Developing Countries), and is endorsed by the Global Spatial Data Infrastructure Association (GSDI) and GISCorps of the Urban and Regional Information Systems Association (URISA). In addition, the roads data development activity has also been listed as sub-task EC-09-02(a), "Human Dimension of Ecosystem Utilization and Conservation," of the Group on Earth Observations (GEO) 2009-2011 Work Plan. Finally, gROADS is linked into the United Nations Spatial Data Infrastructure (UNSDI) through its adoption of the UNSDI-Transport (UNSDI-T) data model.

http://www.ciesin.columbia.edu/confluence/display/roads/Global+Road...