This work investigates the energy dissipation in a wheel/rail system with field measurements and friction work modelling. Friction and contact conditions are measured and analyzed in order to calculate the power saving of one vehicle running over a curve of a metro line. For modelling the contact forces, creepages and spin between the wheels and rails are determined via simulations of a train travelling in a curve of the track. Next the contact stress and the micro-slip in the contact area are computed from the forces, creepages and spin as well as the measured friction coefficient and...