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 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 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 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 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. <EOS>