## 1 Introduction
At the end of this research, the procedure is demonstrated on the example of a real integrated functional territory (Presov Region) and is solved on the basis of the simultaneously solved problems of transport services in the Presov Region, optimisation of public transport lines, and optimisation of the timetables of railway passenger transport carriers, suburban bus transport, and urban public transport, which will be part of the newly built integrated system IDS Vychod. Currently, the integrated transport system IDS Vychod operates only in the region of Kosice, but in the coming days, the region of Presov will also be involved in this integrated transport system. The critical aspects of the current infrastructure system are poorly set timetables that cannot be coordinated within the integrated transport system. Therefore, there is a need to optimise the infrastructure system. As part of the coordination of timetables, it is necessary to adjust the arrivals and departures of trains and buses into the functional system, considering the usual habits of passengers in this region and the requirements of carriers and customers of transport services. The aim of this research is to connect the needs of passengers, carriers, and customers of transport services and transform them into a complex and high-quality model of transport service for the territory, which is defined by the routing and functions of lines, the type of transport and the intervals of connections on individual lines, the number of vehicles (sets) required for the service of individual lines, transfer times at relevant points and directions, the limit of the radius of an attractive daily commute to the centre of the region, as well as the general timetable on each line. An innovative part of our research is the creation of a new form of multicriteria evaluation in the form of determining descriptors on an evaluation scale that always compares the paired importance of the criteria and their weights and respects the current traffic, socioeconomic, and natural specifics of the territory served by the proposed line, as well as its potential, especially in terms of labour mobility strength, time losses, and the health risks of residents resulting from the unproductive and stressful spending of time in transport, or from the point of view of the development of tourism. The limitations of our research result from the usual habits of the travelling public, since when creating or optimising traffic services in a region that is to be part of an integrated transport system, it is necessary to start from the original traffic services, knowledge of the area being addressed, and the usual habits of the travelling public, adapting the proposal to the requirements of the interested parties (operators, contractors of public passenger services, and passengers) and the needs of the travelling public. All these aspects must be connected to create a high-quality traffic service in the territory and an effective integrated transport system. This article is divided into several sections. The Introduction section provides a general view of public transport, with a primary focus on regional transport and its line formation. Also described here is the methodology creation process and approach to the design of traffic services with a connection to an integrated transport system. The Literature Review section provides an overview of the research with a similar focus on this issue, which points to the differences and innovativeness of individual research. The Research Background section contains the background of solving the theoretical transport service problems of the territory and a description of the currently solved problems of the transport service of the Presov Region in Slovakia. The Methodology section is focused on the basic procedures of the design of the transport services of the territory, supported by the development diagram of these routes and the multicriteria evaluation of the variants of the transport services.