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A Model for Calculating the Coefficient of Accessibility in the Transylvanian Administrative Territorial Units. The present paper analyzes the essential aspects regarding the accessibility by applying an assessment model of the accessibility of the administrative territorial units (ATU) within Transylvania. The methodology used for the calculation of the accessibility coefficient is based on the analysis of the distance between point A and point B, calculating the distance based on satellite points. An analysis of the obtained results regarding the accessibility by road in different administrative territorial units, show that these units have recorded a higher coefficient such as Cluj-Napoca, Sibiu, Târgu Mureş, Huedin, Iernut, Teiuş, Alba Iulia, while other most inaccessible territorial units are located in the mountain areas of the Alba, Cluj, Bistriţa-Năsăud, Harghita, Covasna and Hunedoara counties. Following the analysis of the obtained results regarding the accessibility we can calculate the accessibility level of relief units (eg. Trascău Mountains – 7.4 points or Hârtibaciu Tableland – 6.17 points). The values obtained as a result of this analysis can be used in the future local, micro-regional or regional studies which will also comprise elements of accessibility.

Keywords: Accessibility, administrative territorial units coefficient, counties, access level of relief units, inaccessible areas, Transylvania.