Transport exclusion is currently a serious social problem, especially in the counties of the Low Beskids and the Bieszczady Mountains. To better illustrate this problem, it is necessary to observe changes in the suburban public transportation network and, in particular, to identify areas where its quality has deteriorated significantly. The starting point of the research is the year 1990, when on the one hand, the economy was already shifting to the new free market principles, while on the other hand, PKS enterprises still dominated the public transport. The endpoint of the study is the beginning of the year 2019. The article also discusses the background of the described changes. The summary also includes the consequences of those processes as well as the recommendations on how to neutralise some of their negative effects.