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Integrated Timetables for Railway Passenger Transport Services

Rail passenger transport services with integrated regular interval timetables (IRIT) offer passengers a regular interval timetable for services on the railway network. IRIT have the potential to increase the quality and attractiveness of railway passenger services in comparison to other transport modes. This article summarizes the advantages and challenges of an implementation of IRIT for railway passenger services and derives the main requirements for the successful introduction of IRIT. The comparison of the regulatory framework, the role of IRIT and the development of passenger railway services in CH, the NL and the UK, shows that in those countries, where either IRIT has been introduced (CH) or the high frequency of trains between cities provides for a system comparable to IRIT (NL), railway services play a more important role in the modal split. The successful introduction of IRIT requires a long-run implementation schedule which identifies the necessary investments in the railway infrastructure and points out the financial resources available to make those investments. Furthermore, IRIT requires a high level of punctuality of railway passenger services, the coordination between railway companies when designing the timetable and a priority rule for passenger railway services within IRIT when there are capacity restrictions on the railway network.