This paper examines the development of an integrated “city–suburb” tariff system for the Tashkent agglomeration, based on the ATTO transport card. The study highlights the fragmentation of the current fare structure, in which suburban railway services remain excluded from the existing digital integration of urban transport modes (bus and metro). Drawing upon international best practices, the research proposes a methodological framework for incorporating suburban train journeys into a unified tariff zone, applying transfer discounts, and preventing fare duplication. The proposed model aims to reduce overall passenger expenditures, enhance the attractiveness of public transport, and support the establishment of a sustainable “city–suburb” mobility system.

Integrated tariff; ATTO transport card; suburban railway; public transport integration; transfer compensation; urban–suburban mobility; fare unification; Tashkent agglomeration.

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