After loading the truck, the loader must tamp down the load so that it is even with the top of the bed. This allows the drivers to drive down the public roads without putting a tarp over the load. This is a way to maximize the load while minimizing the time from start to finish and minimizes loss and potential damage to other vehicles on the public roads. The distortion of the truck in the image is caused by taking the photo through the curvature of the windshield of the truck I was riding in.