This master thesis explores the role of public transport in creating better sustainable mobility within Aalborg and Aarhus municipalities. The problem formulation was ”What role does public transport have into creating better sustainable mobility? ” Here I worked with a quantitative approach since I had five expert interviews. Through the analysis of the expert interviews, I highlighted some of the most influential factors for the public transport, which were the political and financial aspect, and the dilemma of the “whip” and “carrot”. I concluded the following: a shift towards sustainable mobility is a gradual process. It requires political willingness to change, it also highlights the dilemma that both the municipalities and traffic companies faces; providing sustainable mobility options while being limited by available resources.