Abstract: A portable safety rail arrangement is sized to be selectively mounted and removed from a flatbed trailer. A flatbed trailer includes a deck and at least one safety rail arrangement that is selectively mountable and removable from the trailer. In certain preferred implementations, there are a plurality of safety rail arrangements provided for the flatbed trailer, which can be arranged to form a continuous fence around the perimeter of the trailer. A method for providing a safety arrangement for a flatbed trailer includes mounting a single-piece safety rail onto the trailer.