Analysis of information exchange structures in ITS systems

The article draws attention to the aspect of information exchange between devices and systems implementing specific ITS services. A classification of ITS services and systems is provided, and the architecture of information exchange between the elements of these systems and an outline of their cooperation are presented. An example describing the information communication of a traffic artery management system with other ITS systems is also included.
INTRODUCTION
ITS (Intelligent Transport Systems) are defined as systems aimed at improving transport operations by reducing operating costs, increasing safety levels, and optimizing the use of existing road infrastructure by moving vehicles. These systems are intended to use telecommunications and IT technologies, as well as automation and measuring devices, which, in conjunction with advanced control methods, influence the improvement of road communication.
An important role in the operation of ITS systems is played by the distribution of information, for which the elements of these systems are both the source and the recipient. To this day, this basic functionality constitutes a serious problem due to the diversity, importance, scope of impact, as well as the method of acquiring and distributing information. A lack of sufficient communication can be a source of many disturbing phenomena, which manifest themselves through a lack of information about the traffic situation, loss of synchronization of multimodal transport means, disturbances in smooth traffic control, and many others.
In the method of acquiring and distributing information related to ITS, the message itself is also crucial, which should be characterized by elements such as sender, recipient, importance, time, and finally, content. For this purpose, a uniform, systematized message exchange protocol, independent of the manufacturer and type of equipment, is necessary at the interfaces of the systems.
To this day, in the field of ITS systems, greater emphasis is placed on defining services and systems, and little is done in the field of describing the communication mode, organizing message types, interfaces, and protocols.
In the further part of the article, ITS systems will be presented based on the services they implement. Next, the planes of ITS systems and groups (…) will be presented.

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