Method for operating a storage area facility with - a central control (1*), - a storage rack with at least one, preferably several, levels (50a, b) spaced vertically apart, supported by a supporting structure, - the driving surfaces (50"a, b) of a level being formed by the upper sides of several shelves adjoining one another in a gapless manner within a level, - unmanned, autonomously driving tractors with an on-board control and trailers that can be coupled to or uncoupled from the tractors and are driveable or parked on the shelves, wherein - the on-board control of a tractor is informed of a travel destination for the tractor by the central control (1*), wherein the tractor itself determines its route from its current position to the travel destination by means of its on-board control in the form of a target travel route and drives to the destination, in which its on-board control - either receives several potential target travel routes from the central control (1*) and selects one of them, - or is informed of freely accessible areas and receives from the central control (1*) helpful information for establishing a target travel route, and the on-board control determines the target travel route by taking this information into account, - or is only informed of freely accessible areas by the central control (1*) and the on-board control determines the target travel route within the freely accessible areas, characterised in that - the tractor, with and without a coupled trailer, repeatedly determines its current actual position on its journey to the destination and compares it with its target travel route, and if there is a deviation compensates for the difference by coming closer to the target travel route by driving to it, and - the tractor, with and without a coupled trailer, already frees up to the central control (1*) the freely accessible areas already located behind it along its target travel route for other tractors to use before it has reached its destination. - a central control (1*), - a storage rack with at least one, preferably several, levels (50a, b) spaced vertically apart, supported by a supporting structure, - the driving surfaces (50"a, b) of a level being formed by the upper sides of several shelves adjoining one another in a gapless manner within a level, - unmanned, autonomously driving tractors with an on-board control and trailers that can be coupled to or uncoupled from the tractors and are driveable or parked on the shelves, - the on-board control of a tractor is informed of a travel destination for the tractor by the central control (1*), the tractor itself determines its route from its current position to the travel destination by means of its on-board control in the form of a target travel route and drives to the destination, in which its on-board control - either receives several potential target travel routes from the central control (1*) and selects one of them, - or is informed of freely accessible areas and receives from the central control (1*) helpful information for establishing a target travel route, and the on-board control determines the target travel route by taking this information into account, - or is only informed of freely accessible areas by the central control (1*) and the on-board control determines the target travel route within the freely accessible areas, - either receives several potential target travel routes from the central control (1*) and selects one of them, - or is informed of freely accessible areas and receives from the central control (1*) helpful information for establishing a target travel route, and the on-board control determines the target travel route by taking this information into account, - or is only informed of freely accessible areas by the central control (1*) and the on-board control determines the target travel route within the freely accessible areas, characterised in that - the tractor, with and without a coupled trailer, repeatedly determines its current actual position on its journey to the destination and compares it with its target travel route, and if there is a deviation compensates for the difference by coming closer to the target travel route by driving to it, and - the tractor, with and without a coupled trailer, already frees up to the central control (1*) the freely accessible areas already located behind it along its target travel route for other tractors to use before it has reached its destination. - the tractor, with and without a coupled trailer, repeatedly determines its current actual position on its journey to the destination and compares it with its target travel route, and if there is a deviation compensates for the difference by coming closer to the target travel route by driving to it, and - the tractor, with and without a coupled trailer, already frees up to the central control (1*) the freely accessible areas already located behind it along its target travel route for other tractors to use before it has reached its destination.