A vehicle for moving trailers that are not coupled to their usual towing vehicle in which steering is conducted by an operator walking next to the vehicle and moving separate ones of a pair of levers for a pair of hydraulically driven wheels that control speed and direction of rotation. The gear defines a plurality of teeth on a circumference of the gear so that the gear teeth define a first arc having a first radius. Damage categories for at least one location in the imagery data may be provided using discriminant analysis applied to the wavelet transformation images. A respective forwardly projecting positioning element is disposed above the first supporting element at a front end of each of the first and second lateral load bearing members and has a form of a sleeve. The insert is fixed in a holder in the valve housing by means of axially extending teeth in the face of the housing which receives the insert. The antenna system includes a first antenna, a second antenna, a circuit coupled to the first and second antennas, and a controller configured to control the circuit for enabling beam forming and beam steering or for enabling the function in conjunction with the at least one of the one or more protocols.