The vehicle should Meet loading and/or covering regulations to prevent spilling or blowing.
In order to prevent any portion of the load from escaping by blowing or spilling, the bed carrying the load must be entirely enclosed on both sides, in the front, and in the back by a tailgate, board, or panel. To prevent any portion of the cargo from escaping due to blowing or spilling, the top of the load must be covered with a canvas, tarpaulin, or other covering that is firmly tied to the front and the back. No load-carrying compartment that entirely encloses the load or any load of loose materials that are not blowing or pouring over the top of the load-carrying compartment are subject to this criterion.
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