Operating system for a vehicle, in particular a commercial vehicle

The invention relates to an operating system for a vehicle, in particular for a commercial vehicle, with at least one display device (3), in particular a screen, which displays an operating menu for controlling and/or actuating vehicle functions, and with a rotatable and depressible rotary-push control element (13), through whose rotational and pressing actuation the operating menu is operable. According to the invention, a rotatable direct operating element (15) is assigned to the rotary-push control element (13), through whose rotational actuation several different main menu items of the operating menu are directly selectable and/or preselectable, wherein by means of the rotary-push control element (13) the preselected main menu item and/or at least one submenu item in the selected main menu item is callable and/or selectable.