A rail structure (70, 70', 70") comprising tracks for a system ("S") for propelling an electrically propellable vehicle along a roadway, the system ("S") comprising a plurality of roadway sections (2a1, 2a) subdividing the roadway, wherein each of the roadway sections comprises one or more elongated tracks (51, 52) having conductors (4a, 4b) introduced therein adapted to be supplied with current and put under voltage, and being connectable via a switch to one or more vehicle external power sources ("III"), for thereby enabling a charging of said set of batteries ("II", "B") related to the vehicle, but primarily driving the vehicle over the set of batteries ("II", B) along the roadway and the roadway sections (2a1, 2a), and one or more vehicles propellable by means of an electric motor or motors, with each of the respective vehicles comprising a control circuit adapted for necessary distribution of power, and for providing a required power and/or speed control, wherein said vehicle is, on its underneath side provided with contact means, displaceable up and down and sideways, in relation to the direction of transportation of the vehicle, wherein said elongated track or tracks and its conductors (4a, 4b) extend along the roadway and wherein said contact means is coordinated with a vehicle-related control equipment (100, 10) for creating an adaptation of the contact means () so as to at least offer a mechanical and electrical contact with said conductors (4a, 4b), wherein coordination between the conductors (4a, 4b) and the contact means occurs via coordinated current collectors adapted for mechanical and electrical cooperation with respective ones of the conductors (4a, 4b), characterized in that said rail structure comprises: - external wall sections (71, 72) made of metal; - a partition separating the external wall sections, said external wall sections being oriented parallel with said tracks; - a first track limited by a first external wall section and said partition, wherein a first conductor surface is arranged in a lower portion of said first track; - a second track limited by a second external wall section and said partition, wherein a second conductor surface is arranged in a lower portion of said second track, and in that said partition is provided in the form of an intermediate wall and is made of an electrically conductive material, and in that said first track comprises a first electrically insulating layer (81, 81a) applied to surface portions facing each other of said first wall section and the partition, and that said insulating layer is coordinated with the lower portion and supports the first conductor surface and in that said second track comprises a second electrically insulating layer (82, 82a) applied to surface portions facing each other of said second wall section and the partition and that said insulating layer is coordinated with the lower portion and supports the second conductor surface. a plurality of roadway sections (2a1, 2a) subdividing the roadway, wherein each of the roadway sections comprises one or more elongated tracks (51, 52) having conductors (4a, 4b) introduced therein adapted to be supplied with current and put under voltage, and being connectable via a switch to one or more vehicle external power sources ("III"), for thereby enabling a charging of said set of batteries ("II", "B") related to the vehicle, but primarily driving the vehicle over the set of batteries ("II", B) along the roadway and the roadway sections (2a1, 2a), and one or more vehicles propellable by means of an electric motor or motors, with each of the respective vehicles comprising a control circuit adapted for necessary distribution of power, and for providing a required power and/or speed control, wherein said vehicle is, on its underneath side provided with contact means, displaceable up and down and sideways, in relation to the direction of transportation of the vehicle, wherein said elongated track or tracks and its conductors (4a, 4b) extend along the roadway and wherein said contact means is coordinated with a vehicle-related control equipment (100, 10) for creating an adaptation of the contact means () so as to at least offer a mechanical and electrical contact with said conductors (4a, 4b), wherein coordination between the conductors (4a, 4b) and the contact means occurs via coordinated current collectors adapted for mechanical and electrical cooperation with respective ones of the conductors (4a, 4b), - external wall sections (71, 72) made of metal; - a partition separating the external wall sections, said external wall sections being oriented parallel with said tracks; - a first track limited by a first external wall section and said partition, wherein a first conductor surface is arranged in a lower portion of said first track; - a second track limited by a second external wall section and said partition, wherein a second conductor surface is arranged in a lower portion of said second track,