In this paper, the author points out that ITS systems are too often regarded as systems that should provide just one ITS service and straightforward designs are preferred as these seem to offer a fast and valid solution. ITS is catching on so rapidly that soon more services will be needed. It has become clear that with an increase of services there is an increased risk of systems contradicting each other and of uncontrollable and unmanageable situations. Therefore architecture rules should be used from the very beginning of ITS implementation. A good use of ITS requires: (1) proper arrangement of responsibilities. This is considered in the executive view of ITS; (2) the right combination of functions, aspects that are considered in the logical view of ITS; and (3) good system design, considered in the physical view of ITS.
Samenvatting