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 ...

Tom Berry is archivist for the Historical Construction Equipment Association (HCEA). Information is available at www.hcea.

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 ...