Scientific instruments supporting the city bus fleet conversion from the conventional one to the electric powered

The article presents the dilemmas of choosing the right methodical instruments, that should support the process of converting the fleet of city buses from the conventional one to the electric powered. This process should be scientifically supported in all these dimensions, which serve various stakeholders involved in this problem. The authors presented the general structure of the fleet conversion problem, the necessary submodels and proposed a description method in the form of a process convention and in a system-functional approach, as well as they proposed IT support for the modelling itself and the process of conversion.