Take a road safety tip from Derrick Ford: If you get behind a tractor-trailer hauling a shipping container, steer clear. The trailer portion of the rig may be in bad repair. Ford's advice comes ...

Several models, including 700-gallon, 475-gallon and 950-gallon, are available in either skid-mounted or DOT-complaint trailer-mounted configurations.

Testing conducted by the Insurance Institute for Highway Safety (IIHS) this spring shows underride guards mounted to the side of a trailer provide similar safety benefits as rear-mounted guards.