In order to provide highest quality se1vices to its users, railwaysneed to pay alien/ion not only to the standard qualitativeand quantitative indicators, but also to othe1; seemingly less relevantones. One of these may be the accessibility coefficient of acertain railway station. The paper analyses the formal mathematicalmodel of its definition, and proposes a possible classificationof accessibility. The considerations also expand brieflyto the accessibility regarding gravitational zone of the respectiverailway station, mentioning also some problems related to theaccessibility and the guidelines of their solutions