ABSTRACT
In Chapter 2.2 we introduced the basic definitions of transport infrastructure. Here we elaborate on these concepts, again starting with the broad definitions given by Kay (1993) who states that transport and other infrastructures have the following characteristics: 1 They are networks involving delivery systems and there are substantial
interactions in the provision of services to individual customers. 2 They form a small but indispensable part of the total costs of a wide
range of products in which they are used. Thus, the losses that result from service failure are often very large relative to the basic cost of service provision.
