Abstract: An open sided trailer construction in which a roof structure (4) is supported between front and rear frames (30,31) by a central fore and aft spine or web (5,21); the spine or web has lateral supports (8,26,27) extending either side of the web or spine which support a roof covering (4,28) and preferably extend to cantrails (7,20) from which hang curtains (3). The arrangement has the advantage that intermediate supports between the front and rear frame for the roof are not required and the cargo space within the trailer is easy to access and has a greater volume for a given trailer dimension than previous open sided trailer constructions.

Abstract: A road vehicle having at least one pair of wheels at each side the axles of which are connected together by a tandem suspension in such a way that as one wheel of a pair is subjected to load during running, a part of the load is transmitted by the suspension to the axle of the other wheel of the pair so that the load is shared between the axles characterized in that a pair of rocker plates is pivotally mounted on the vehicle for each of the two axles of the pair at each side of the vehicle, each pair of rocker plates being so located and arranged as pivotally to engage each end respectively of a leaf spring associated with the respective axle, the four rocker plates at each side of the vehicle being pivotally connected by a connecting rod.