This paper considers the possibility of consistency between different road network referencing systems used, and outlines the principles which would govern the design of a system that could fulfil almost everyone's needs. Thus it aims to define a sustainable referencing system. A standardised referencing system really starts to become useful in the long-term management and development of a working road network. Three essential user views must be supported: (1) the classified road network, in terms of generally understood routes; (2) a network of nodes and links, to allow traffic demand to be predicted and updated; and (3) links or sections with well-defined beginnings and ends. The referencing system must be generally understood; this quite severely restricts what can be done. It must accept, record and control continual changes to the road network. It must accommodate the following types of changes: (1) changes in the route numbering or road classification system; (2) new roads and reroutings of existing roads; and (3) upgrading of road sections. A potential solution is indicated, combining and coordinating several techniques to form a coherent system; it should make sense on paper, and not depend on specific computer systems.
Abstract