This paper points out the importance of integrated passenger transport system that would greatly ease the life of all residents in the nothern part of Croatia. The planing process of integrated passenger transport system is a very complicated procedure that has to match up with a large number of factors. The paper lists the pilot lines together with a master plan of north Croatian area that have not yet been realized. The problem with realisation of a master plan are the financial investments that are required to turn different mods into a single unit in the northern Croatian area. The advantages of implementing an integrated passenger transport system are listed. The examples of cities in Europe using an integrated passenger transport system in practice are shown through this paper. In addition to the above, the concepts of public passenger transport and modes of transport are defined. This paper tries to proves that the implementation of an integrated passenger transport system is a long term process that would offer the residents a better quality of life as well as a city transport system that is tenable.