We collaborated in development of the platform for the integration and coordination of urban systems (transportation, outdoor lighting, energy) to build applications across urban systems, to provide adaptive and cooperative control for urban subsystems, and to optimize the combined performance. We upgraded the traffic flow simulation framework, based on OpenDRIVE logical description of road network. The framework includes the descriptions of road network and traffic lights and allows the simulation of vehicle flows, according to the IDM (Intelligent driver model). It allows simple and intuitive planning of new and/or changed road segments, since their influence can be easily observed. The upgraded simulator also allows optimization of traffic lights’ switch segments, resulting in more fluent traffic flows.