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?

Instead, they're rated using a 5th-wheel hitch. The tractor-trailer style kingpin and horseshoe hitch head take weight from the trailer, and put it over the middle of your tow vehicle, right over ...

Later this month, Texas drivers could see a self-driving tractor-trailer while cruising across ... to jump into the driver's seat or grab the wheel on each trip, saying that such incidents have ...