The modern mind tends to think of Roman roads as uniform structures that are straight and are paved. The lack of variety for many people in terms of structure tends to exclude roads from books on architecture or Roman technology in general and when they are included there is only a most general account. Even the Italian literature on the subject seldom strays from the major roads and the topographical identification of where roads occur. This chapter attempts to account for the variety of transport struc tures in Italy and presents an outline of technological change through time. By technological change I do not mean when the first occurrence of a technology became available, but a perception of the widespread use of that technology. Thus, what I wish to identify is the utilisation of a technology, rather than invention or simple change in isolated instances.