A vehicular trailering assist system includes at least one camera disposed at a trailer hitched to a hitch of a vehicle, and an electronic control unit (ECU). The ECU determines, during a first stage of a calibration maneuver of the vehicle and trailer, image coordinates of at least one ground feature point. The ECU, responsive to determining image coordinates of the at least one ground feature point, estimates orientation parameters of the camera based at least on the determined image coordinates and intrinsic camera parameters. As the vehicle and trailer travel further along the ground surface during a second stage of the calibration maneuver of the vehicle and trailer, and based on the estimated orientation parameters of the at least one camera, the vehicular trailering assist system determines misalignment of the at least one camera at the trailer.

Techniques are described for measuring angle and/or orientation of a rear drivable section (e.g., a trailer unit of a semi-trailer truck) relative to a front drivable section (e.g., a tractor unit of the semi-trailer truck) using an example rotary encoder assembly. The example rotary encoder assembly comprises a base surface; a housing that includes a second end that is connected to the base surface and a first end that is at least partially open and is coupled to a housing cap; and a rotary encoder that is located in the housing in between the base surface and the housing cap, where the rotary encoder includes a rotatable shaft that protrudes from a first hole located in the housing cap, and where a top of the rotatable shaft located away from the rotary encoder is coupled to magnet(s).

A strength-training device having, in some embodiments, an L-shaped bracket adapted to insert into a hitch assembly on a vehicle, the strength-training device comprising a cruciform and one or more shuttles and anchor points for elongated straps.

A strength-training device having, in some embodiments, an L-shaped bracket adapted to insert into a hitch assembly on a vehicle, the strength-training device comprising a cruciform and one or more shuttles and anchor points for elongated straps.

A coupling system for a fifth wheel coupling includes a first plug unit having a plurality of first plug connectors, and a second plug unit having a plurality of second plug connectors to engage and transmit power and/or fluid with the first plug connectors, and an adjuster unit having a guide section configured to be brought into engagement with a retaining element on one of the plug units to transmit a force from the adjuster unit to the plug unit, which displaces the plug unit along a plug-in axis, wherein the adjuster unit can be displaced transversely and laterally to the plug-in axis or can be rotated about the plug-in axis.

A gladhand coupler assembly is configured to releasably couple to a gladhand coupler having a mating seal and first and second mating structures. The gladhand coupler assembly includes an assembly mating seal for interfacing with the gladhand coupler mating seal and first and second assembly mating structures coupled to the assembly mating seal. The first and second assembly mating structures are configured to interface with the gladhand coupler first and second mating structures, respectively. The gladhand coupler assembly further includes an actuation mechanism configured to move the assembly mating seal relative to the pair of rigidly fixed assembly mating structures. The gladhand actuation mechanism is further configured to place the assembly mating seal into and out of fluid communication with the gladhand coupler mating seal.

An autonomous dock system for a vehicle, comprises a control system with instructions comprising steps for receiving a request to implement an autonomous dock routine. A vehicle speed and clutch position are calculated. A clutch position controller is commanded to maintain the calculated clutch position. An actual torque amount is iteratively detected as transferred across the clutch. A vehicle speed-control mechanism is commanded to maintain the calculated vehicle speed, and the actual vehicle speed is iteratively detected. When comparing the commanded vehicle speed to the detected actual vehicle speed indicates that the detected actual vehicle speed is below a speed threshold, and when the actual torque amount transferred across the clutch exceeds a torque threshold, the control system commands an increase in vehicle speed.

A tow hook includes a monolithic additively manufactured side wall defining a vehicle attachment member, a hollow main body extending from the vehicle attachment member, and a hollow towing member extending from the hollow main body. The vehicle attachment member is configured to rigidly attached to a vehicle and the hollow towing member is configured to securely attach to a towing machine such that the vehicle is towable via the tow hook. The vehicle attachment member can be a threaded shaft with a bore extending along a length of the threaded shaft. The side includes a chamfered plurality of apertures extending from an inner surface of the side wall to an outer surface of the side wall, and having with an inner dimension along a length direction of the hollow main body greater than an inner dimension along a circumferential direction of the hollow main body.

A tow hook includes a monolithic additively manufactured side wall defining a vehicle attachment member, a hollow main body extending from the vehicle attachment member, and a hollow towing member extending from the hollow main body. The vehicle attachment member is configured to rigidly attached to a vehicle and the hollow towing member is configured to securely attach to a towing machine such that the vehicle is towable via the tow hook. The vehicle attachment member can be a threaded shaft with a bore extending along a length of the threaded shaft. The side includes a chamfered plurality of apertures extending from an inner surface of the side wall to an outer surface of the side wall, and having with an inner dimension along a length direction of the hollow main body greater than an inner dimension along a circumferential direction of the hollow main body.

A fifth wheel hitch assembly is shown and described. The fifth wheel hitch system may comprise a jaw fixed about a pivot pin and a biasing member biasing the jaw to a closed position. The fifth wheel hitch assembly may also include a kingpin guide positioned opposite the jaw, where the kingpin guide is adapted to engage and retain a kingpin against the jaw.