This Diploma Thesis aims to explore the attitudes of passengers living in Attica Region towards free public transport. The method of stated preference and hypothetical cost, time and route comfort scenarios were used to collect the required data, which were included in a specially designed questionnaire answered by 234 commuters in the Attica region. Subsequently, logistic regression models (polynomial and binomial) were developed, which showed that the possibility of changing means of free public transport depends largely on the cost, time, comfort, beliefs, transportation characteristics and demographic characteristics of the respondents. The faster and more comfortable the journey, regardless of cost reduction, the more likely it is to opt for free public transport instead of staying in the existing means of transport.