Typically, this length comes from the semi-truck's frame, or the extended steel section towards the truck's rear that supports the majority of the wheels and cargo.

There's a good reason why most of the semi-trucks on the road are rear-wheel drive. The alternative doesn't make much sense once you consider usage.

UPDATE: April 30 at 7:25 a.m. A LEX 18 crew on the scene reports that I-75 southbound near mile marker 71 is back open after a semi-truck collision had the roadway closed for several hours overnight.

A semi also crashed in nearly the exact same spot in the canyon on another recent snowy day -- Jan. 30. In that crash, diesel fuel spilled from the truck and hazmat crews had to be called in. CDOT ...

In 2015, the amount of vehicle occupants killed when crashing into the back of a semi-truck had increased by 39% from 2011 — although they were unable to pinpoint exactly how many fatalities ...

A semi tractor-trailer that hit another semi-trailer on Wednesday caught fire upon impact, said an officer with the Vail Police Department. The incident shut down Interstate 70 in both directions ...

A section of I-10 is shut down after a car rear-ended a semi-truck in Tonopah on Friday morning. Video shows the car wedged underneath the trailer.