Side skirts on semi-truck trailers are aerodynamic devices that help lower wind resistance beneath trailers. This resistance, known as aerodynamic drag, has a detrimental effect on fuel economy ...

As the trucking industry struggles to recruit drivers, driverless trucks won’t need sleep, won’t speed and won’t get road rage. But experts and truck drivers say they are not a panacea.

Side skirts on semi-truck trailers are aerodynamic devices that help lower wind resistance beneath trailers. This resistance, known as aerodynamic drag, has a detrimental effect on fuel economy ...