In a goggle lens interchange system, a goggle frame has a ledge on which a lens is removably placed, wherein the ledge is able to be exposed so that a lens of the goggles is able to be removed from the ledge, and another or replacement lens is able to be placed on the ledge. The control unit is constructed such that a triggering signal can be generated for a safety system on the basis of the rollover signal, taking into account the at least one rotational wheel speed signal. The operations can further include determining a degree change in a position of a chair connected to the wagering game machine.