Relating primarily to the field of transporting are: a device, namely a self-controlled wheel, comprising several parts, admitting of change in the mutual position of individual parts of said self-controlled wheel, which are in contact with a support surface； and a method, namely a method to operate a wheel, comprising several parts, whereby the mutual position of individual parts of that wheel which are in contact with a support surface is changed. The technical outcome is a broader range of technical facilities.
