Abstract: A system and method aerodynamic fairings including a gap fairing. The gap fairing includes multiple panels. The multiple panels are interconnected utilizing connectors to form a half conical shape extending from a front portion of a trailer. The gap fairing also includes supports connected to the multiple panels through support structure of the trailer.

Abstract: A system and method for aerodynamic fairings including an undercarriage fairing. The undercarriage fairing includes multiple panels including at least two front panels and at least two rear panels. The at least two front panels are connected in a front portion under the trailer. The at least two rear panels are positioned in front of a wheel undercarriage at sides of the trailer. One of the at least two front panels and one of the at least two rear panels are interconnected on both sides of the trailer. The undercarriage fairing further includes supports connected to the frame of the trailer. The supports are connected to the at least two rear panels.