Sometimes also known as cab over engines, these vehicles stand out immediately with their flat-face design, which eliminates the projected hood you see on the front of conventional semi-trucks.

From cab design to road regulations, here are 15 key reasons these trucks are built for their unique environments.

one of America's most popular semi-truck brands. The giveaway is the distinctive flat front cab-over-engine design present on both Optimus' alternate mode and the real truck. Incidentally ...

Based on a 2014 Freightliner Argosy cab-over semi truck, it's not exactly clear which character this is, but if the movie was to rehash old characters, this could very well be the big-screen debut ...

Heading for a debut in a few weeks at the Tokyo Motor Show, this diminutive concept grabbed our attention not only with its quasi cab-over semi-truck styling but also its snicker-worthy name ...