flatbed truck 3d model

White semi-truck with a long flatbed trailer. The trailer is fully extended and much longer than the cab. The flatbed is loaded with long steel beams. The beams are stacked evenly and placed lengthwise along the trailer. The cargo is perfectly centered on the flatbed. The steel beams cover almost all of the trailer’s width and length, leaving only a small margin on each side. The beams sit directly on the flatbed surface, fully supported, not floating, not offset. The load is wide and flat, not tall. The height of the cargo stays below the height of the truck cab. Add several evenly spaced straps securing the beams across the width. Correct real-world proportions. Balanced, symmetrical, realistic loading.