You might have heard the term "jackknifing" with regards to semi-trucks, especially when they're in accidents. What is jackknifing, and how does it happen?

TRANSYLVANIA COUNTY, North Carolina (WLOS) — The North Carolina Highway Patrol is investigating after a chase involving a tractor-trailer truck passed through Brevard and Rosman Friday morning.

THIS, THOUGH, IT WAS THE MOST SERIOUS, DESTROYING THAT TRUCK AND TAKING OUT MECHANICAL EQUIPMENT ALONG THE TRACKS. THE CRUSHING IMPACT PUSHED THE TRACTOR TRAILER DOWN THE TRACKS, TAKING OUT A ...

The driver, Eugene Merrell, 48, of Tonganoxie, Kansas, was driving a 2005 Peterbilt tractor-trailer truck north on US 69 Highway at 7:18 a.m. when the accident occurred, according to a Kansas ...