A step deck trailer is also known as a drop deck trailer. These are simply flatbed trailers with a top and bottom deck, hence the name step deck. Step deck trailers are designed to haul freight that cannot be transported on a standard flatbed, because of height restrictions along the transport route.
![Step_Deck.jpg](https://thumbnails.shelf.io/74206b9e-ca86-466b-b8ca-8ba7e8cd8212%2Fgems%2F4d29300e-4195-4883-95ce-4cd8634da458%2Fwiki%2Fimages%2F1621418068214-1621418068214.png)