To facilitate transporting heavy equipment on forest service roads and the like by means of a low-bed trailer having a gooseneck drawbar, the customary fifth wheel pivotal connection between the towing tractor and trailer is immobilized relative to horizontal or side pivoting and the pivotal connection between the tractor and trailer is placed rearwardly of the tractor adjacent the bottom of the gooseneck. As a result, the tendency for the trailer to "cut the corner" on a sharp curve is substantially eliminated and the trailer will substantially follow the tracks of the tractor around such corners.