W hile driving behind a semi-truck, you've probably noticed a long bar going across the bottom, usually sporting red and white stripes.These are officially called underride guards, which became ...

While driving behind a semi-truck, you've probably noticed a long bar going across the bottom, usually sporting red and white stripes.These are officially called underride guards, which became ...

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

Rear underride guards, metal bumpers that hang from the back of a semi, can keep cars from sliding under these large trucks in rear crash tests done by the Ins. Inst. for Highway Safety. In new ...