Vehicle comprising - a current collector for feeding traction energy from a two-pole overhead contact line system, - an electric or hybrid-electric traction drive, which is carried by a non-earthed vehicle frame, - an electrical energy storage device for intermediate storage of traction energy that is fed in, - a first line branch that can connect the traction drive to the current collector, - a second line branch which can connect the traction drive and the energy storage device to the current collector and a galvanically isolating DC converter is interposed in said second line branch, - wherein a first switching element for opening and closing the first line branch is connected upstream of the traction drive, characterised by - a third line branch which can connect the traction drive and the energy storage device to the current collector with a galvanically non-isolating DC converter is interposed in said third line branch, wherein a second switching element for opening and closing the second and third line branch (13, 14) is connected upstream of the traction drive, wherein a third switching element of opening and closing the third line branch is connected upstream of the galvanically non-isolating DC converter and wherein the first, second, and third line branches (11, 13, 14) can be connected in parallel, - a speed measuring device for detecting the vehicle speed and - a control facility that is configured so as to control the first switching element, the second switching element and the third switching element in dependence upon the measured vehicle speed in such a manner - that below a predeterminable threshold value for the vehicle speed, the first switching element and the third switching element open and the second switching element closes, and - that above the threshold value the first switching element closes and the second switching element opens and. - a current collector for feeding traction energy from a two-pole overhead contact line system, - an electric or hybrid-electric traction drive, which is carried by a non-earthed vehicle frame, - an electrical energy storage device for intermediate storage of traction energy that is fed in, - a first line branch that can connect the traction drive to the current collector, - a second line branch which can connect the traction drive and the energy storage device to the current collector and a galvanically isolating DC converter is interposed in said second line branch, - wherein a first switching element for opening and closing the first line branch is connected upstream of the traction drive, characterised by - a third line branch which can connect the traction drive and the energy storage device to the current collector with a galvanically non-isolating DC converter is interposed in said third line branch, wherein a second switching element for opening and closing the second and third line branch (13, 14) is connected upstream of the traction drive, wherein a third switching element of opening and closing the third line branch is connected upstream of the galvanically non-isolating DC converter and wherein the first, second, and third line branches (11, 13, 14) can be connected in parallel, - a speed measuring device for detecting the vehicle speed and - a control facility that is configured so as to control the first switching element, the second switching element and the third switching element in dependence upon the measured vehicle speed in such a manner - that below a predeterminable threshold value for the vehicle speed, the first switching element and the third switching element open and the second switching element closes, and - that above the threshold value the first switching element closes and the second switching element opens and.