The current work is aimed at studying the actual problems in modeling Latvian public-use railway infrastructure (hereinafter – the railway infrastructure) development and targeted on defining both key variables and test indicators. The research was based on the analysis of the statistical material and the observance of existing methodological approaches with a feedback to the Latvian specific distinctions described in the work. The output indicators of the model were adopted from the National Development plan 2020 and stated at the beginning of the study. After that externalities were segregated as an outside environment and expressed in correlated indicators. Completely available statistic data for the scoped factors was analyzed for its significance within an ample horizon and summarized in system tables. The following conclusions were drawn: 1) methodological solution is needed for evaluation of the endogenous factors with indicators that can be fixed directly for the railway infrastructure; 2) there is no reliable data from non-European stakeholders on outside impact on the Latvian public-use railway infrastructure. Therefore, further academic research is needed on how to create and secure the flexible and sustainable railway infrastructure development model. The survey method for further examination of purposed system of indicators is provided for discussion. JEL code: H410