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This paper explores the differences between two different types of potential accessibility models applied to the urban system of Romania, using demographic data from 2015. The first model is based on a classical formalization of the potential accessibility function, while the second one focuses on the introduction of variable parameters in the model’s equation. When mapping the results, one will found that the models we investigated respond to different needs and visions in spatial planning. The alternative formalization provides a frame for a more in-depth analysis of the transportation endowment, at regional scale, together with an assessment of the urban systems hierarchy. The study highlights the fragility of the local urban systems gravitating around small cities, placed in precarious accessibility situations. The results can be used for a better assessment of the policy priorities, both from the perspective of spatial planning and sustainable development.

Potential accessibility models and planning policy design in Romania: Are the fixed model’s parameters leading to wrong interpretations?