“SAF Trak” axle is powered from the tractor’s hydraulic wet kit. On the trailer, two hydraulic motors, one at each axle end, turn the wheels to help get the rig moving in slippery conditions.

General-purpose, tandem-axle, tag-along equipment trailer is suited for transporting trenching and horizontal directional drilling equipment 18,000-lb. GVWR with a maximum hauling capacity of ...

A hybrid electric-drive trailer tandem being developed by a group of engineers at Hyliion Inc. in Pittsburgh, Pa. The device, which for now has no official name, is undergoing road testing and ...

The video above is ABC13's 24/7 livestream. Police said the 18-wheeler was travelling southbound when, unknown to the driver, a 25-year-old man jumped or climbed onto the top of the truck's trailer.