A semi-trailer including an elongated trailer frame having a front portion and a rear portion, a wheel bogie disposed beneath the trailer frame, a jack disposed proximal the rear portion of the trailer frame, where the jack is configured to raise and lower the rear portion of the trailer frame, The jack includes an actuator connected to the trailer frame at the rear portion, a plurality of pivotal support arms connected to an end of the actuator and a plurality of ground engaging members connected to the end of the plurality of support arms, where the ground engaging members are powered to transversely move the rear portion of the trailer frame.

A slide-out undercarriage mounted on an underside of a first trailer pulled by a highway tractor. The slide-out undercarriage is adapted for attaching a rear of the first trailer to a front of a second trailer. The slide-out undercarriage includes a fixed undercarriage frame mounted on an underside of a first trailer. A front axle with front wheels is mounted on a front axle frame and a rear axle with rear wheels is mounted on a rear axle frame. The rear axle frame includes a fifth wheel adapted for engaging a king pin on the front of the second trailer. A pair of first slide out tubes are attached to the front axle frame. A pair of second slide out tubes are attached to the rear axle frame. The first and second slide out tubes provide for allowing an operator of the first trailer to adjust the front and rear axles in various load positions under the first trailer when pulling the second trailer.

Embodiments of the present disclosure provide a method and apparatus for reducing drag. An exemplary apparatus includes a semitrailer having a main frame extending along a longitudinal axis and a subframe movably connected to the main frame between a first position along the longitudinal axis and a second position along the longitudinal axis. The apparatus further includes an axle assembly attached to the subframe, the axle assembly including an axle, a left wheel set, a right wheel set, and a suspension, and a first recapture device located under the main frame behind and separated from the left wheel set along the longitudinal axis by a given spacing. The apparatus still further includes a second recapture device located under the main frame behind and separated from the right wheel set along the longitudinal axis by a second spacing.

The present disclosure pertains to fairings for use on a trailer having a movable bogie. In one implementation, panels of the fairing extend at least to a rear termination point of the movable bogie and include a slim hinge to prevent interference with a pair of wheels coupled to the bogie. Accordingly, implementations of the present disclosure include a fairing that allows for translation of the movable bogie, while also providing panel coverage up to and beyond a pair of wheels coupled to the bogie regardless of the bogie position relative to the trailer.

An apparatus for a trailer is provided that has a top fairing configured for being mounted to a top surface of the trailer at a location closer to the back of the trailer than the front of the trailer. The trailer has a longitudinal direction, a lateral direction, and a vertical direction. First and second side fairings are also included and are configured for being mounted to respective first and second side surfaces of the trailer. Additionally, first and second trailer skirts are configured for being carried by the trailer and are part of the apparatus. First and second trailer rear skirts are likewise included and are located rearward of the first and second trailer skirts. The combination of components provides aerodynamic benefit to the trailer.

A vehicle suspension position adjustment arrangement including a frame member having a plurality of apertures, and a trailing arm having a first end pivotally coupled to a slide member and a second end biased away from the frame member. A locking pin movable between an unlocked position where the locking pin is withdrawn from one of the apertures and the slide member is free to slide along the frame member, and a locked position where the locking pin engages one of the apertures preventing the slide member from sliding along the frame member, and a plurality of sensors spaced along the frame member, wherein a single sensor of the plurality of sensors is configured to sense both the locking condition of the locking pin and the location of the locking pin along the frame member.

A chassis portion, for a vehicle chassis, including a chassis rail 33b, a cross member 35a, a suspension hanger 51 integral, fastened or fastenable to the cross member, and an arrangement for clamping, a portion of the chassis rail, between a portion of the hanger and a portion of the cross member.

A load divider dolly has: a chassis; ground engaging wheels; a tow vehicle mount pivotally mounted to the chassis; a variable volume element mounted to adjust a pitch angle between the chassis and the tow vehicle mount; and a pressure control system configured to, during use, supply and exhaust fluid such as gas to and from the variable volume element to distribute load between a tow vehicle and the ground engaging wheels of the load divider dolly.

A container transport system for transporting an intermodal freight container includes: a tow assembly pivotally coupled to a tow vehicle, the tow assembly including a support frame, a boom assembly mounted on the support frame, the boom assembly having a boom frame and a lifting actuator mounted on the boom frame; a lift beam shaped to attach to an end of the intermodal freight container, the lift beam mechanically associated with the lifting actuator; a dolly removably coupled to one of the tow assembly and tow vehicle, the dolly including a bogey frame including a plurality of wheels attached to the bogey frame, a pair of brackets located on sides of the bogey frame, the brackets spaced apart such that a width of the intermodal freight container fits between the paid of brackets.