Nine principles for the analysis of transportation systems are presented. The primary purpose of these principles is to identify the common threads underlying a great variety of seemingly disparate transportation problems , and so to stimulate the development of a transportation science. The principles are equally applicable to urban transportation, megalopolitan transportation, developing country transportation, and strategic mobility. The first five principles pertain to the scope of the system' the components of a transportation system, the modes and movements in a system which must be considered, and the nature of a transportation system as a particular form of market. The second group of four principles pertains to the problems of analysis' the spectrum of potentially available transportation and non-transportation options, the objectives of transportation, and the relevant impacts. To illustrate these principles, the paper concludes with a discussion of their application to two specific problems, urban transportation and strategic mobility. /author/.
Abstract