This document relates to formulations for combating bacterial infections in animals which provide for improved long-acting oral and injectable formulations for systemic delivery of antibiotics, which are designed to achieve high bioavailability. A converting section converts an input signal into output signals on the basis of the values of reference parameters, serving as references of a plurality of parameters for signal conversion, and the values of newly proposed parameters. The pivoting feature and the fixed pin are positioned between two strands of a chain. In the preferred embodiment, movable elements, which carry housings for wheelchair-engaging belts and passenger restraint belts, are mounted to the side wall of the vehicle for pivotal movement about vertical axes between storage positions and operative positions.