To provide urban center level estimates of the proportion of population that has convenient access to public transportation.

To provide national and subnational estimates of SDG indicator 9.1.1, which measures the proportion of the rural population who live within 2 kilometers of an all-season road.

To provide urban center level estimates of the average share of the built-up area of cities that is open space for public use for all.

To provide estimates of total, urban and rural populations and land areas in proximity to nuclear power plants.

To provide documentation on roads data sets that are potential candidates for inclusion in the Global Roads Open Access Data Set (gROADS), and which may be useful to others searching for data on road infrastructure.

To provide a vector (point) version of the input administrative units used in GPWv3 for use in data integration.