Abstract: The disclosure is directed at an apparatus for an active converter dolly for use in a tractor-trailer configuration. In one aspect, the apparatus includes a system to connect a first trailer towed behind a towing vehicle to a second trailer. The apparatus further includes a kinetic energy recovery device for translating the mechanical motions or actions of the dolly into electricity or electrical energy so that this energy can be used to charge a battery or to power other functionality for either the dolly or the tractor-trailer. The active dolly may also operate to assist in shunting the tractor-trailer. The active dolly is operable in a number of modes to increase vehicle performance and efficiency.

Abstract: A rack of unitary one-piece construction for mounting to a vehicle is disclosed. The rack may be made of plastic, and may be manufactured by injection moulding. The rack may be mounted and fastened to and fastened to a truck bed. The rack protects the rear window and the roof of the truck cab when the rack is mounted to the truck bed. A connector that is received in a stake pocket and fastened to a rail of the truck bed may be used to fasten the rack to the rail of the truck bed. The injection-moulded one piece plastic rack may allow for flexibility of ease of installation and uninstallation at leisure. Line of sight from the cab through the rear window may be provided with the rack mounted to the vehicle. The load supported by the rack may be distributed to its base.