(WTVO) — Two people have been hospitalized following a crash in Lena involving a semi-trailer ... as well as a dump truck on its side and a tractor-trailer with heavy front-end damage ...

Dump trailers come in a few basic configurations: semi-trailer end dumps ... in one load would take a contractor running end dumps up to four trucks alone," asserts Kelly Knodel.

Unlike a full trailer, a semi-trailer doesn't have a front axle. That means it relies on the truck for both support ... or ...

Walter Keil Transporte und Erdbewegungen uses Goldhofer »MPA« 3 low-loader semi-trailer to deliver heavy plant up a mountain ...