Wheeled rails and a jack let one person load or remove a heavy fifth wheel hitch while keeping it low and stable in the pickup bed.
A pivot-linked tracked main vehicle and powered trailer improve heavy-load transport in harsh terrain while reducing ground damage.
A snap-in UHMW bearing replaces grease at the tractor-trailer kingpin, cutting rotational friction, wear, and maintenance.
A kingpin position sensor triggers entry-opening blocking in the fifth wheel to stop semi-trailer detachment after lock failure.
A rearward stiffness gradient in tires and connections reduces rearward amplification and oscillation in multi-trailer lateral maneuvers.
Sensors, height control, and a movable coupling head automate tractor-trailer air and electrical line docking without manual intervention.
A rearward stiffness gradient across tires and connections helps multi-unit vehicles absorb oscillations and limit rearward amplification.
An articulated trailer with powered tracks and counterbalanced weight distribution boosts hauling capacity while reducing terrain damage during turns.