Within the project „VEM – Virtual Electromobility in Taxi and Commercial Traffic Munich“, vehicle and infrastructure concepts of a vehicle fleet to be electrified were simulated. Vehicles of the second largest German cab fleet and selected companies of the Chamber of Crafts for Munich and Upper Bavaria, whose employees depend on the commercial use of vehicles, were equipped with smartphones. The sensors in the smartphones were used to record the signals required for the simulation. The aim was to investigate various vehicle and infrastructure concepts for cab and commercial traffic in the Munich area. By varying the virtual vehicle architecture with regard to energy storage and drive in the simulation model, it was possible to obtain information about suitable electromobility concepts. In addition, different charging options and locations were to be specified in the simulation program during the course of the experiment and the influence on the infrastructure network evaluated. A statement about the effectiveness and costs of an electrification of larger vehicle fleets regarding technical, ecological and economic aspects should be made possible within the scope of this project.