I see many trucks and trailers with all of the available aerodynamic aids commercially as I travel the highways of our nation . The one observation I have made is that in many cases the aerodynamic devices are often mounted in a manner that does not take full advantage of the potential gains which could have been realized . It is imperative to have each aerodynamic addition line up with the one that comes before it . I have put together a little sample of how I had approached each aerodynamic addition on my Cascadia AeroX and 53 foot dry van trailer.
The point I am trying to convey is to look at how each piece of this aero puzzle has been added to enhance the next piece . If the aerodynamic pieces had not been added properly they can even cancel out the benefits to be gained each of them . By careful planning the battle against aerodynamic drag can be won . After all we have enough battles to fight without picking a fight with the air !