Semi-trucks have a lot of wheels, a lot of storage space, and a lot of... lights? Obviously, some are necessary to see the ...

Regular side view mirrors, meanwhile, are too small to properly reflect the truck's full length. To give a semi truck driver proper spatial awareness, semi trucks are usually equipped with three ...

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 ...