The Theoretical Framework of the Optimization of Public Transport Travel

With the increase of cars on the streets, more and more people in big cities, decide to move from one place to another by public transport, such as tram, metro or bus. Public transport users need detail informations about network connections. Therefore, some urban portals offer to use systems of optimization of public transport travel. However, finding one or several optimal routes, according to user preferences, is a difficult problem. This paper presents an original method for determining optimal paths in public transportation network. Author describes a network model with time- dependent and bi-modal links, defines the problem of finding optimal routes with users´ preferences and proposes algorithm, which can be a solution of this problem.