Abstract: An interface system for attaching one or more objects to a truck bedside includes a top plate integrated with a top portion of the truck bedside, a plurality of female connector tubes attached to the top plate and extending into a volume between the top portion of the truck bedside and a wheel well of the truck bed, and a locking bar assembly. A plurality of male connector tubes attached to the one or more objects can be inserted into the female connector tubes and secured to the female connector tubes using the locking bar assembly that can be locked in a locked position by a locking mechanism.

Abstract: A trailer can include an open bed, a frame, an actuator, and a pin. The open bed can extend a width and a length. The frame can support the open bed. The actuator can be mounted on the frame. The pin can be mounted on the frame along a periphery of the open bed. The pin can be drivable by the actuator in reciprocating movement transverse to the length between a first pin end limit of travel defining a refracted retracted position and a second pin end limit of travel defining an extended position. The pin can be recessed from the open bed when in the retracted position and extend above the open bed when in the extended position.