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Aerodynamics sure have a significant role to increase the efficiency of the trailers, in spite of being not so easy to extend to certain applications (i.e. dump bodies, tankers and other specialized equipments), but there is more room for improvements regarding other aspects, such as frame and suspension designs where a lot of dead weight can be saved in order to overcome any weight eventually added by aeromods. Improving the efficiency of the tractor units is also important.
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