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?

Army Unimog into a robust home on wheels that can keep them cozy and comfortable during their off-road and off-grid adventures ...

A fatal crash involving a double trailer Freightliner shut down Route 581 East in Camp Hill for hours after it barreled into an active work zone, Pennsylvania State Police and PennDOT officials ...