Road hierarchy and functional classification. Chapter 2 in `Traffic engineering practice', fourth edition, edited by K.W. Ogden and D.W. Bennett, Monash University, 1989.

This is the latest form of notes for a chapter in the text used for a periodical workshop and other teaching purposes in Australian traffic courses. Different approaches to understanding road hierarchy are noted, and their applicability to real road systems is discussed. The basis of the `separate functions' road system is described. Several applications of road hierarchies are outlined, including their importance to LATM, and some definitions of road types used in practice are quoted for comparison. (A)