Abstract :
Managing the demand for road capacity becomes necessary when the claims on highway space exceed the available supply. Successful demand management depends on the ability of traffic managers to influence the behaviour of potential and actual road-users. Thus, the introduction of transport electronics provides new means of achieving this behavioural modification. So far, development has been largely technology led and, as yet, there appears to be no generally accepted philosophy regarding the employment of the applications currently being introduced. In management terms, the advent of electronics constitutes a modern addition to a system which has evolved so as to control the operation of communications. However, unless one has a clear understanding of the operation of this present, substantially pre-electronic system, it is possible that some new initiatives could be inappropriate or even counter-productive. This paper is therefore offered as a contribution towards improving our understanding of the current situation
