Even in ancient Rome roads were divided into categories and the system today can still be more or less categorised in the same way. There were three categories of road:
1. The first type of road included public high or main roads constructed and maintained at the public expense, and with their soil vested in the state. Such roads led either to the sea, or to a town, or to a public river (one with a constant flow), or to another public road.
2. The second category included private or country roads, originally constructed by private individuals, in whom their soil was vested, and who had the power to dedicate them to the public use. Such roads benefited from a right of way, in favour either of the public or of the owner of a particular estate.
3. The third category comprised roads at or in villages, districts, or crossroads, leading through or towards a village. Such roads ran either into a high road, or into other roads, without any direct communication with a high road. They were considered public or private, according to the fact of their original construction out of public or private funds or materials. Such a road, though privately constructed, became a public road when the memory of its private constructors had perished.