Source: World Bank.
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World Land Transportation Network Length and Density, 2002
The above map represents the density of two major land transportation infrastructures, roads and railways. Network length tends to be a function of the population and the level of economic development with geography playing a role in terms of suitable (flat) landscape. For instance, India has a higher land network density than China while its level of economic development is lower. This is in part attributable to a more suitable landscape in terms of total flat land. Yet, infrastructure quality is not reflected by this map.