Public transport of passengers in Croatian cities is one of the basic elements of the transport operation of each city. Each system has its essential features for contribution to the development of a certain city and its settlements. Every day the demand of passengers is growing in terms of organized and individual transport. In order to avoid traffic congestion, passengers should allow better service and thus attract them to use public means of transport to go to the desired destination. It is important to monitor and analyze the traffic continuously and to improve in terms of accessibility of transport, safety and improving fleet. By public transport, an important role plays cost of transportation and this cost needs to be more acceptable than transport passenger with private cars. The passengers would have more effectiveness of such kind of transport. Thus, passengers who use public transport every day have the opportunity to purchase season tickets, which have a certain discount and certain population has a free ride.