Aerodynamic trucking systems

A side skirt system, configured to attach to a cargo trailer comprising a generally-rectilinear floor assembly having longitudinal sides, a longitudinal axis, a forward portion, a trailing portion, and having at least one rear wheel assembly situated below said generally-rectilinear floor, comprising:

• a) a plurality of generally-vertical support posts;
• and
• b) a set of generally-vertical side-skirt wall panels;
• c) wherein each respective generally-vertical support post of said plurality comprises a respective upper end;
• d) wherein each such respective generally-vertical support post is coupled only adjacent, at said respective upper end;
• e) wherein at least one respective generally-vertical support post is coupled below said upper end to at least one of said set of generally-vertical side-skirt wall panels;
• f) at least one adjustable attacher structured and arranged to adjustably attach said generally-vertical support post to said generally-rectilinear floor;
• g) wherein each such respective generally-vertical support post is configured to assist upward and inward pivoting of at least one of said set of generally-vertical side-skirt wall panels;
• h) wherein impact damage of said set of generally-vertical side-skirt wall panels may be reduced by such upward and inward pivoting;
• i) wherein such respective generally-vertical support post further comprises at least one positional biaser structured and arranged to positionally bias such respective generally-vertical support post into at least one generally-vertical position;
• j) wherein said set of generally-vertical side-skirt wall panels are positionally biased toward at least one useful aerodynamic rest-position;
• k) wherein said at least one adjustable attacher comprises at least one vertical-axis rotator configured to allow rotation of said generally-vertical support post about a generally-vertical axis;
• and
• l) wherein said at least one vertical-axis rotator comprises at least one positional maintainer structured and arranged to maintain such respective generally-vertical support post in at least one defined rotational position about such generally-vertical axis.