A system for facilitating the transfer of agricultural material from a transferring vehicle to a receiving vehicle, the system comprising: a receiving vehicle comprising a propelled portion for propelling the receiving vehicle and a storage portion for storing agricultural material; a transferring vehicle having a spout for directing agricultural material toward the storage portion of the receiving vehicle; a first location-determining receiver on or associated with the transferring vehicle; a second location-determining receiver on or associated with the receiving vehicle; a first imaging device (10, 12) facing towards the storage portion of the receiving vehicle, the first imaging device (10, 12) collecting first image data; and a mode controller adapted to authorize operation in an automated control mode in which an image processing module processes the collected image data to facilitate determination of the relative position of the spout and the storage portion and generates command data to place the storage portion and spout in relative cooperative alignment such that the spout is aligned for transferring of material into the storage portion; characterized in that the mode controller is configured for determining whether to use an automated control mode of the spout position with respect to the storage portion or an operator-directed manual control mode of the spout based on a first operational status of the first location-determining receiver, a second operational status of the second location-determining receiver, and a third operational status of the first imaging device (10, 12) and/or the image processing module; and that the mode controller is adapted, if the first, second and third operational statuses are acceptable, to authorize operation in the automated control mode. a receiving vehicle comprising a propelled portion for propelling the receiving vehicle and a storage portion for storing agricultural material; a transferring vehicle having a spout for directing agricultural material toward the storage portion of the receiving vehicle; a first location-determining receiver on or associated with the transferring vehicle; a second location-determining receiver on or associated with the receiving vehicle; a first imaging device (10, 12) facing towards the storage portion of the receiving vehicle, the first imaging device (10, 12) collecting first image data; and a mode controller adapted to authorize operation in an automated control mode in which an image processing module processes the collected image data to facilitate determination of the relative position of the spout and the storage portion and generates command data to place the storage portion and spout in relative cooperative alignment such that the spout is aligned for transferring of material into the storage portion; characterized in that the mode controller is configured for determining whether to use an automated control mode of the spout position with respect to the storage portion or an operator-directed manual control mode of the spout based on a first operational status of the first location-determining receiver, a second operational status of the second location-determining receiver, and a third operational status of the first imaging device (10, 12) and/or the image processing module; and that the mode controller is adapted, if the first, second and third operational statuses are acceptable, to authorize operation in the automated control mode.