Modeliranje transportnega sistema kot pripomoček prometnega planiranja

Abstract

The issues dealt with in these two papers fall into two sections: the first covers model instruments in support of traffic system planning and current new planning objectives; the second presents the model structure as an _instrument for reaching these objectives. The existing planning models are static, often established in the form of assignments for optimalization including certain assumptions on the behavior of users or condition of the economy defined in terms of time. As they cover large areas, minor changes in demand limited in terms of space are not shown in respective models. For their review the construction of new models is required, which, for reasons of different contents, are not related to the global (universal) model. They usually do not include the parameters by means of which we can establish the responses of the system to different changes or parameters to describe these changes. For these shortcomings and changed requirements the society i.e. demand for traffic service presents to the transport system a different basis for planning and structuring is required as an aid for system planning. This further sets the requirement of new introduction of planning objectives. From the aspect of objectives the paper deals with the two planning methods: {aj an established method which channels planning into meeting the future demand assessed on the basis of projected economics development and (b) a parallel planning of demand and supply. Supply has apart from the task of meeting demand one major task to complete, namely to generate and channel new demand in response to a favorable supply .