FLAT BED TRAILER

According to the present invention there is provided a flat bed trailer for transporting an item of heavy machinery comprising: a floor; a plurality of wheels for travel over roads; a coupling mechanism for coupling the trailer to a towing vehicle; a pair of longitudinally extending side walls, wherein each of the side walls in the pair has an inward face; a first restraining bar and a second restraining bar, the first and second restraining bars each having a restraining position in which the respective restraining bar extends substantially laterally across the trailer between the pair of longitudinally extending side walls to restrain the item of heavy machinery when the item of heavy machinery is positioned on the trailer, wherein the restraining position of the first restraining bar is disposed nearer to the coupling mechanism than the restraining position of the second restraining bar; a first bar retainer for retaining the first restraining bar in its restraining position; and a second bar retainer coupled to at least one of the side walls for releasably retaining the second restraining bar in its restraining position; wherein the first restraining bar is received by the first bar retainer at an inward face of at least one of the side walls in the pair of longitudinally extending side walls.