Abstract
In this paper is given the definition of e reliability of a transport information system, with features of transport information systems listed. Equations for calculating reliability indicators are given, as well. The developed hierarchical graph model for assessing the reliability of transport information systems and an algorithm for analyzing the graph model, which allows taking into account the specifics of the reliability of the operation of system elements at different levels of the hierarchy, are presented. Using the graph model and the graph model analysis algorithm, it is possible to reasonably predict the strategy for the creation and development of transport information systems.
Highlights
An information system is a system for storing, searching and processing information, including appropriate organizational resources that provide and distribute information (ISO / IEC 2382: 2015) [1].For information systems, reliability is a property of a system to retain in time the ability to perform the required functions in accordance with the specified goals and conditions of use (GOST standard 27.015-2019) [2].Currently, there are many different information systems
The developed hierarchical graph model is designed to assess the reliability of a wide range of transport information systems
The implementation of the graph model is based on the two general principles: 1) principle of decomposition; 2) principle of hierarchy and multilevel reliability assessment, i.e. - the ability to assess the reliability of both the entire transport information system and its individual elements
Summary
An information system is a system for storing, searching and processing information, including appropriate organizational resources (human, technical, financial and others) that provide and distribute information (ISO / IEC 2382: 2015) [1]. Information systems can be classified by architecture, by the degree of automation, by the method of data processing, by the scale of the tasks being solved, by the scope of application - by the subject area. Each subject area (sphere of application) has its own type of information systems. Integrated intelligent transport systems are rapidly developing, including all the types of transport [3]. It is possible to highlight the main functions of the TIS in the management of transport processes - those are the management and planning of transportation; traffic management; analysis of emergency situations and possible management in such situations; information support for traffic participants Transport information systems have become a necessary component of the transport infrastructure, these systems are becoming more complex and have high reliability requirements, the task of assessing the reliability of information transport systems is urgent [4]
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