Folding side skirt system for a trailer

A side skirt system for reducing drag on a trailer, comprising:

• a side skirt wall configured to be coupled to one side of the trailer to extend generally below a storage container of the trailer at least partially along a length of the trailer, wherein the side skirt wall is movable between a fully-extended position wherein the side skirt wall generally defines a straight line, and a fully-retracted position wherein a first distance between a front end and a rear end of the side skirt wall is less than a second distance between the front end and the rear end of the side skirt wall when the side skirt wall is in the fully-extended position,
• wherein the front end of the side skirt wall is configured to be coupled to a rear wheel assembly of the trailer for back-and-forth movement therewith, and wherein the rear end of the side skirt wall is configured to be coupled to a rear portion of the trailer.

A trailer and side skirt system for reducing drag on a trailer, comprising:

• a trailer having sidewalls, a floor assembly, a rear bumper coupled to and extending downwardly from the floor assembly, and a rear wheel assembly coupled to the floor assembly, wherein the wheel assembly is movable relative to the floor assembly between a first, forward position wherein the rear wheel assembly is spaced a first distance away from the rear bumper and a second, rearward position wherein the rear wheel assembly is spaced a second distance smaller than the first distance away from the rear bumper;
• and
• a side skirt system coupled to the trailer and extending downwardly below the floor assembly of the trailer at least partially along a length of the trailer between the rear wheel assembly and the rear bumper of the trailer, wherein a front end of the side skirt system is configured to move back-and-forth with the rear wheel assembly relative to the floor assembly, and wherein a rear end of the side skirt system is configured to remain generally stationary relative to the floor assembly.