You have to board the truck scale and wait for the green light. Then you have to turn left, right and then left. The sorting center is at the bottom.
You must unload your materials at the places dictated by the attendant. If you have a trailer or a dump truck, you have to lower the bucket and lock it before starting in the opposite direction on the scale.
You will have to look in your mirror to see the light go green and go back to go park and come and pay at the sales office.