Combined road/rail wheel device for foad and rail operation

A combined road/rail wheel device that is adjustable by an adjusting device between road operation and rail operation, the combined road/rail wheel device comprising:

• a wheel that is driven or not driven and configured to rotate about a wheel axis and includes a road tire with a tire running surface at an outer radial circumferential surface of the wheel and an axial inside and an axial outside oriented away from the axial inside;
• the adjusting device;
• a wheel flange arranged at the axial inside or the axial outside of the wheel, connected to co-rotate with the wheel and extendable by the adjusting device in its entirety or partially from a radially retracted position for road operation to a radially extended position for rail operation;
• a radially outer wheel flange circumferential surface of the wheel flange that extends radially at the most to the tire running surface in the radially retracted position and extends radially beyond the tire running surface in the radially extended position,
• wherein a wheel flange side surface of the wheel flange is oriented perpendicular to the wheel axis and configured to engage a side flank of a rail head of a rail of a track section in the radially extended position of the wheel flange, or
• wherein the wheel flange circumferential surface of the wheel flange is configured to engage a track channel of a groove rail of a rail track in the radially extended position of the wheel flange.