Abstract: Methods and systems are provided for controlling an autonomous vehicle. In one embodiment, a method includes: identifying, by a processor, at least one constraint on a longitudinal dimension of an upcoming road; defining, by the processor, constraint activation logic based on a type of the at least one constraint; performing, by the processor, the constraint activation logic to determine a state of the constraint to be at least one of active and inactive; when the state of the constraint is active, validating, by the processor, a motion plan of the autonomous vehicle based on the constraint; and selectively controlling the autonomous vehicle based on the validating of the motion plan.

Abstract: In accordance with embodiments of the invention, an elevated transportation system is provided. The elevated transportation system includes a plurality of towers. A plurality of track segments is operable to connect to the plurality of towers. A lift car is operable to move along the plurality of track segments. Each tower of the plurality of towers is operable to receive and connect one or more track segments. The plurality of towers is operable to enable the lift car to move along the plurality track segments.

Abstract: To provide a railroad vehicle 10 capable of controlling a private room temperature and a guest room temperature with a simple configuration without increasing the number of manufacturing steps and without requiring complicated control while using a common air conditioner in view of the fact that the number of passengers of a private room and the number of passengers of a general guest room are largely different from each other in many cases, which causes a change in indoor temperature.

Abstract: A damping device includes a damper provided to an outer end of a stacker crane in a traveling direction. The damper includes: a rod member extending along the traveling direction; a first biasing member configured to bias the rod member outward in the traveling direction; and a movement restriction mechanism configured to allow inward movement of the rod member in the traveling direction and restrict outward movement of the rod member in the traveling direction when the rod member has moved inward in the traveling direction.

Abstract: A car coupling system for a rail vehicle includes a first crash energy management system disposed within a draft sill. The first crash energy management system includes a first end plate, a second end plate, and a first central tube disposed between the first end plate and the second end plate. A second crash energy management system is also disposed within the draft sill. The second crash energy management system includes a third end plate, a fourth end plate, and a second central tube disposed between the third end plate and the fourth end plate.

Abstract: A disposable lubrication tank liner for a rail lubricating system, including an upper sidewall portion, a lower outlet portion, and an intermediate edge surface. The upper sidewall portion has a plurality of generally vertically disposed walls extending downwardly from an upper flange surface. The vertically disposed walls partially define a reservoir space for holding rail lubricant. The lower outlet portion includes a plurality of angled wall portions converging inwardly to a lower flange surface to further define the reservoir space. Further, the intermediate edge surface connects the upper sidewall portion and the lower outlet portion.

Abstract: A method for operating a train comprising two or more locomotives, the method comprising the steps of: a) Setting one or more locomotive control levels and choosing a selected route of travel; b) Calculating a target train speed profile and a target in-train force profile over at least a portion of the selected route; c) Measuring one or more operating parameters related to the operation of the train; d) Calculating a future train speed profile and a future in-train force profile for a future period based on at least one of the one or more operating parameters, at least one of the one or more locomotive control levels and one or more pieces of information relating to the selected route; e) Calculating adjusted locomotive speed control levels relating to the one or more operating parameters based on a difference between the target train speed profile and the future train speed profile, the adjusted locomotive control levels being adapted to maintain the target train speed profile over the future period; f)

Abstract: A method operates a first and a second vehicle. Accordingly, on the vehicle side, it is checked whether a new coupling with another vehicle has occurred, and after establishing a new coupling, a respective configuration signal signaling the coupling status is transmitted to a track-side switching unit. If there is a configuration signal of the first vehicle and a configuration signal of the second vehicle, a communications connection is established between the two vehicles via the track-side switching unit or an already existing communications connection between the two vehicles is reconfigured.

Abstract: In a system and method for operating a system having a rail, a stationary unit, rail-guided mobile parts, and a slotted hollow waveguide, either a first one of the mobile parts or the stationary unit functions as a transmitter, and a second one of the mobile parts functions as a receiver. The transmitter is configured for the simultaneous transmission of an electromagnetic signal and an acoustic signal, e.g., at a first instant. The receiver, which is set apart from the transmitter, is configured to detect the arrival of the electromagnetic signal at a second instant and to detect the arrival of the acoustic signal at a third instant. The second mobile part has an evaluation unit which is configured to determine the distance between the transmitter and the receiver based on the acquired second and third instants.

Abstract: A system and method for performing braking operations on a hyperloop pod are disclosed herein. The hyperloop pod may have a secondary braking system, wherein the secondary braking system may be operable to provide a first braking force. The hyperloop pod may have a transponder communication system and a line-of-sight system, wherein the line-of-sight system may be operable to detect a second hyperloop pod at a line-of-sight distance. The hyperloop pod may have a memory and a processor operable to detect a second hyperloop pod and determine a collision margin between the hyperloop pod and the second hyperloop pod. The hyperloop pod may engage the secondary braking system if a safety margin is equal to or greater than the collision margin.

Abstract: The system can include a dispatcher and a plurality of cars. However, the system 100 can additionally or alternatively include any other suitable set of components. The system 100 functions to enable platooning of the plurality of cars (e.g., by way of the method S100).

Abstract: A railroad switch device for moving railroad switch points. The device includes a hydraulic unit having a hydraulic manifold coupled to a hydraulic pump integrated with an electric motor via a pressure pipe, where the hydraulic manifold is also coupled to the hydraulic pump via a hydraulic oil reservoir and a return pipe, and the hydraulic manifold is coupled to a hydraulic double-rod cylinder to provide forward movement and reverse movement of a point rod. Also included is a mechanical target to automatically indicate the position of a point rod, and a plurality of spring units to produce a continuous thrust force for holding the railroad switch points closed in forward position and reverse position, wherein the plurality of spring units control the target rotation to 90 degrees.

Abstract: A powered lift hand truck with a corresponding method of operation and control. The apparatus includes a powered lift hand truck configured to lift a load from a lowered to a raised position (and vice versa). The system uses the rotational speed to measure linear speed and enforce a consistent speed of the load. The system is programmed to lift/lower loads at the same speed, regardless of load overall weight. If, for example, the load is heavy, the system determines that the speed is below a predetermined threshold and increases the power so as to increase speed.

Abstract: A hand truck having a plurality of hingeably engaged sides that is expandable from a closed position dimensioned to fit through a standard doorway, to an open position to form a movable platform having a swing out support frame having an upper end hingedly attached to the rear side of the center frame which is movable between an extended position and a stored position. A corresponding sofa dolly and a platform enclosure is also disclosed.

Abstract: A system for transporting, transferring, or storing goods including stackable receiving containers, wherein stacking structures in a region of the container bases and mating structures in an upper edge region of a side wall interact to lockably stack receiving containers one on top of the other. At least one roll transport unit has a set-up surface for a receiving container and roller transport unit which connect to longitudinal ends of an adjustable length locking bar. A retaining structure is provided on a first longitudinal end of the locking bar for connecting to the upper edge of the receiving container. A retaining structure is provided on the second longitudinal end of the locking bar for connecting to a mating structure on the roller transport unit. The locking bar has a releasable fixing mechanism for limiting the locking bar length and setting the length to a selected dimension.

Abstract: A multi-stage toy walker includes at least a handle, a base, and a configurable component that is adjustable from a folded-flat configuration to at least one of a seat-shaped configuration and a basket-shaped configuration.

Abstract: An adjusting drive for a steering column for a motor vehicle may include a threaded spindle with an external thread that engages in a spindle nut and a drive unit that is coupled to the threaded spindle or the spindle nut such that the threaded spindle and the spindle nut are able to be rotatably driven relative to one another by overcoming a screw resistance. To permit an optimized adjustment over the entire adjusting region, the threaded spindle includes at least one actuator portion and at least one transition portion. The transition portion is configured such that the screw resistance of the spindle nut is lower in the transition portion than in the actuator portion.

Abstract: A vehicle an instrument panel, a first actuator moving the instrument panel in a front-rear direction, a steering part provided in the instrument panel movable in the front-rear direction, a second actuator moving the steering part relatively with respect to the instrument panel, a microprocessor controlling the first actuator and the second actuator, and a memory previously storing a target instrument panel position and a target steering position in association with a driver. The microprocessor is configured to perform the controlling including determining whether the driver has started a driving operation, and when it is determined that the driver has started the driving operation, controlling the first actuator and the second actuator so that the instrument panel and the steering part are respectively located in the target instrument panel position and the target steering position stored in the memory.

Abstract: A steering apparatus for actively controlling an at least semi-autonomously driven motor vehicle. The steering apparatus includes a steering body having an axis of rotation, a steering wheel handle and a steering wheel canister. The steering wheel handle and the steering wheel canister are rotatably connected to one another about an axis of rotation. An airbag module is arranged within the steering wheel canister, wherein the steering body has an active position and a stowed position, and is movable between these positions. In the active position, the steering body is rotatable about the axis of rotation for active control of a relevant motor vehicle. The airbag module is held in the steering wheel canister in a functionally identical orientation irrespective of the position of the steering body. An increase in the seating and movement freedom of the driver during a (fully) autonomous operation can be realized while maintaining safety.

Abstract: A steering column for a motor vehicle, including a casing unit, in which a steering spindle is mounted so as to be rotatable about a longitudinal axis (L) running in the longitudinal direction, and which has at least one inner casing telescopically adjustable in the longitudinal direction in an outer casing tube, comprising a roller guide having at least one bearing support, which is radially supported and movable on the inner casing, and in which at least one roller is mounted so as to be rotatable about a roller axis which is transverse to the longitudinal axis (L).

Abstract: A steering column assembly for motor vehicles, includes a steering wheel, a steering shaft housing unit including a steering shaft that is joined to the steering wheel. The steering shaft housing unit is pivotally connected to a supporting bracket about a first shaft, said supporting bracket being pivotally connected to a vehicle body about a second shaft First and/or second adjusting means adjust the angular position of the steering shaft housing unit relative to the supporting bracket and the angular position of the supporting bracket relative to the vehicle body.

Abstract: Backing a vehicle around objects and vehicles is assisted by digitally mapping the location and size/footprint of objects and vehicles. A path for the vehicle to follow is generated by mathematically concatenating small segments of lines of various shapes iteratively, until a mathematical spline curve extending from the vehicle's starting point to a desired end point is generated, the shape of which will safely route the vehicle around objects. The starting and ending points of the spline curve, control points and inflection points are also mapped and wirelessly transmitted provided to a display device for the driver or to the vehicle's steering controls.

Abstract: A lane keeping control apparatus for a vehicle includes a controller. The controller is configured to set a target path on which the vehicle is to travel, calculate a control amount for an electric power steering motor, on a basis of at least an amount of deviation from the target path, control the vehicle such that the vehicle travels on the target path. The controller is configured to compare a response speed of an actual steering angle of the vehicle relative to a target steering angle for travelling on the target path and a set response speed, determine a gain of a current value for driving the electric power steering motor such that the response speed is equal to the set response speed, and update the determined gain.

Abstract: A method may determine transformation parameters for a transformation of a position of a vehicle between a first coordinate system and a second coordinate system. In the method, a trajectory may be traveled with the vehicle in a step. In another step, the positions of the vehicle while traveling the trajectory may be acquired in the first coordinate system with a first position detection system, and in the second coordinate system with a second position detection system. In a further step, transformation parameters between the coordinate systems may be derived based on the positions of the vehicle acquired in the coordinate systems, and based on at least one geometric parameter of the trajectory.

Abstract: A method of providing evasive steering assist (ESA) includes storing yaw rate data related to a host vehicle, wherein yaw rate data includes a yaw rate stored at each time step from an initial time step [0] to a current time step [n]. The method further includes determining whether to initiate ESA, wherein in response to a determination to initiate ESA, the method includes calculating a current position, a current heading angle, a destination position, and a destination heading angle, wherein the stored yaw rate data is utilized to determine the current heading angle and the destination heading angle. The method further includes generating an evasive steering assist (ESA) output based on the current position, the current heading angle, the destination position, and the destination heading angle.

Abstract: In some implementations, a monitoring system may include a steering system of a machine, a sensor configured to detect movements of the steering system that are indicative of a steering angle of the machine, and a controller. The controller may be configured to monitor, via the sensor, the steering angle of the machine. The controller may be configured to determine, based on monitoring the steering angle, that the steering angle satisfies a threshold that is indicative of the steering angle being excessive for an operation of the machine. The controller may be configured to cause, based on the steering angle satisfying the threshold, the machine to provide an indication that the steering angle is excessive.

Abstract: A parking assistance device includes an imager that captures an image of a surrounding of a vehicle, and a display that displays a guidance image for guiding the vehicle from a parking start position to a target parking position and displays a moving area in which the vehicle can move during a parking operation. An area and dimension of the moving area displayed on the display changes based on a change in a steering angle of the vehicle.

Abstract: Embodiments of this application relate to the field of vehicle technologies, and specifically, to a vehicle frame and a vehicle. The vehicle frame includes longitudinal rails and a steering gear; the steering gear includes a shell and a steering rod slidably disposed in the shell; two ends of the shell are fixedly connected to the longitudinal rails respectively; and two ends of the steering rod respectively protrude out of the longitudinal rails, so as to be movably connected to wheels, and the steering rod drives the wheels to steer when the steering rod slides. In this way, the vehicle frame provided in the embodiments of this application is able to guarantee the torsional mode and stiffness of the whole vehicle while achieving light-weighting of the body.

Abstract: A vehicle roof having a roof element having a planar panel made of glass, plastic or metal, the panel having an outer side facing a vehicle environment and an inner side facing a vehicle interior, and the roof element having a connecting metal plate connected to the inner side of the panel via a molded portion. The connecting metal plate is in loose and sealing contact with the inner side of the panel via contact flanges and defines a cavity together with the inner side of the panel, the cavity being filled by the molded portion, and the connecting metal plate is free from molded portions at its surfaces disposed outside the cavity.

Abstract: An electric work vehicle includes a driver section that an operator is able to enter, a battery positioned forward of the driver section, a motor drivable on electric power supplied by the battery, a travel device drivable by the motor, a cover including an accommodation space inside and capable of being opened and closed, wherein the battery includes an electricity storage to store electric power and a battery cover hermetically accommodating the electricity storage, and the battery cover includes an outer wall surface defining a portion of an exterior of the electric work vehicle.

Abstract: A vehicle includes a vehicle body having an underbody, the vehicle body defining an inner fender, the inner fender forming an opening in the underbody of the vehicle body. A wheel assembly has a rim and a tire, and the wheel assembly is positioned within the inner fender. A suspension knuckle is disposed within the inner fender to permit motion of the wheel assembly relative to the vehicle body. A brake shield is mounted on the suspension knuckle and an inner fender undercover panel is secured on one of the brake shield and the suspension knuckle and disposed inboard of the wheel assembly. The inner fender undercover panel is configured to move up and down with vertical movement of the suspension knuckle and to move with turning movement of the wheel assembly.

Abstract: The invention relates to a motor vehicle floor of a motor vehicle, which motor vehicle floor separates a motor vehicle interior from an outside space. The motor vehicle floor has fluid ducts for a fluid for controlling the temperature of the motor vehicle floor to flow through. At least one fastener is furthermore provided in a region beneath the fluid ducts on the motor vehicle floor, which fastener allows mechanical and thermal contact-connection of at least one electrical energy storage element to the motor vehicle floor.

Abstract: An overlay floor for motor vehicles, applied on the mother floor of the vehicle, intended to fix seats, wheelchairs or other equipment therein, where the overlay floor has a shape adapted to the mother floor of the vehicle in which it is to be mounted and is formed of a main plate and load-bearings rails in which seats and sofas are slidably fastened, where in the floor plate are made longitudinal sockets in which load-bearings rails are placed where the sockets are made in the entire panel of the main board as through, longitudinal openings for the profiles of the load-bearings rails and the load-bearings rails have the dimensions of these openings, i.e. their width is equal to the width of the longitudinal sockets in the main board and their length is equal to length of the longitudinal sockets in the main plate.

Abstract: A vehicle frame rail includes a first half having a hole, a second half having a hole, a spacer locating member and a spacer. The second half is connected to the first half such that the hole in the first half is aligned with the hole in the second half and so as to form an enclosed space between the first half and the second half. The spacer locating member has a body section and a hole. The body section of the spacer locating member is spaced apart from the first half and the second half. The spacer has a first end, a second end and a bore extending from the first end to the second end. The spacer is located in the hole of the spacer locating member such that the bore is aligned with the hole in the first half and the hole in the second half.

Abstract: An automotive body adhesive bonding position optimization analysis method of obtaining an optimum position at which a parts set is adhesive-bonded with a structural adhesive in combination with welding, the method including: disposing an adhesive element as the structural adhesive at a position on a body structure model as a candidate at which adhesive bonding is performed with the structural adhesive; setting an optimization analysis condition including a loading condition applied to the body structure model in optimization analysis, to the body structure model on which the adhesive element is disposed; and performing optimization analysis on the adhesive element as an optimization analysis object in the body structure model to which the optimization analysis condition is set so as to obtain a position of the adhesive element satisfying the optimization analysis condition as the position at which adhesive bonding is performed with the structural adhesive.

Abstract: A fiber-reinforced resin composite includes a honeycomb core, a fiber-reinforced resin layer, and a protection layer. The honeycomb core includes a plurality of cells that are defined by partition walls and extend in an axial direction. The fiber-reinforced resin layer is disposed around the honeycomb core. The fiber-reinforced resin layer includes continuous fibers wound around the honeycomb core. The protection layer is interposed between the honeycomb core and the fiber-reinforced resin layer. The protection layer is configured to prevent rupture of the continuous fibers.

Abstract: A vehicle assembly includes, among other things, a cab back assembly having a first panel and a second panel. The first panel is pivotably coupled to a cab of a vehicle. The second panel is pivotably coupled to the first panel. A method of configuring a cab back includes selectively pivoting a first panel of a cab back assembly relative to a cab of a vehicle. The first panel is pivotably coupled to a cab of the vehicle and is configured to pivot relative to the cab about a first axis. The method further includes selectively pivoting a second panel of the cab back assembly relative to the first panel. The second panel is pivotably coupled to the first panel and is configured to pivot relative to the first panel about a second axis that is spaced from the first axis.

Abstract: A ground support tractor for providing ground support services at an airport has a cab forward configuration and a cab aft configuration. The ground support tractor includes a common chassis having a forward mounting location and an aft mounting location. A seat assembly, a battery system and a plurality of body panels are coupled to the common chassis. In the cab forward configuration of the ground support tractor, the seat assembly is coupled to the forward mounting location, the battery system is coupled to the aft mounting location and the body panels are positioned in a cab forward orientation. In the cab aft configuration of the ground support tractor, the seat assembly is coupled to the aft mounting location, the battery system is coupled to the forward mounting location and the body panels are positioned in a cab aft orientation.

Abstract: An aerodynamic system for a vehicle, includes: an air duct guiding air flow from a front compartment to the outside of the vehicle; and a rotating body mounted in the air duct and rotatable in the air duct. The rotating body may have a rotation axis along a transverse direction of the vehicle, and the rotating body may rotate around the rotation axis.

Abstract: According to a link mechanism type variable wheel deflector applied to a vehicle, a deflector coupled to a cover plate using a hinge boss as a rotation center can be operated using traveling resistant wind as a driving source, a piston receiving the linear movement of a link shaft by a moment arm rotated with the deflector can unfold the deflector while compressing an elastic member, and an elastic restoring force of the elastic member can be applied to the piston to return the link shaft and the moment arm to fold the deflector, thereby strengthening the repeated durability of the elastic member compared to the rotating motion of the spring, and in particular, the rotating motion and the linear motion can be implemented by the link motion mechanism apparatus connected to the deflector, thereby implementing the high durability performance with the low-cost mechanical structure.

Abstract: A steering input device for steer-by-wire, according to the present invention, includes a steering shaft that is mechanically separated from a steered wheel, a reaction force motor that applies a steering load to the steering shaft, a lock mechanism that regulates rotation of the steering shaft, a steering amount sensor that detects an operation amount of the steering shaft and outputs an operation amount signal, and a controller. The controller increases the reaction torque generated by the reaction force motor after the starting switch of the vehicle is switched to an OFF state, and after the reaction torque is increased, switches the lock mechanism to a locked state. Thereby, it is possible to suppress an uncomfortable sensation of the driver in steering, while suppressing occurrence of a phase shift between the steering wheel and the steered wheel when the starting switch of the vehicle is switched to the OFF state.

Abstract: The present invention relates to a power assisted steering system arrangement (100A) for a vehicle comprising a steering wheel (120A), a first, driver, link arrangement (10A) comprises a linkage between the steering wheel (120C) and the front wheels (127,127) comprising a steering column (121A), a Recirculating Ball Joint, RCB, (123A) arranged on a first side of the vehicle, a track rod arrangement for steering the front wheels (127,127), a first lever arm (124A) arranged to transfer a driver torque applied by via the steering wheel to the track rod arrangement providing a connection between the RCB (123A) and the track rod arrangement.

Abstract: A belt pulley (28) for a gear mechanism has a hollow cylindrical body (36) and a disc-like fixing flange (42) which is molded onto an axial end of the body (36), protrudes radially inward, and has a central cutout (44). The fixing flange (42) has at least one first contact face (60) on its inside and the body (36) has at least one second contact face (64) on an inside. The first contact face (60) and the second contact face (64) are offset to each other in the circumferential direction relative to a central axis of the body (36). A steering gear for a vehicle is also disclosed, wherein the steering gear comprises a belt pulley (28).

Abstract: The present discrete relate to an automobile steering apparatus and, more specifically, to an automobile steering apparatus that is capable of preventing or reducing the consumption of engine power and reducing the number of components, and further capable of enhancing convenience for drivers by using functions for controlling the automobile, such as automatic parking, lane keeping, driving assistance according to road conditions, steering vibration attenuation, autonomous driving control, and the like, and in turn, is advantageous to the strength of worm wheels by causing pressure applied thereto to be distributed and provides drivers with enhanced steering feel.

Abstract: A method for operating a steering system includes the steps of: (1) acquiring a variable at least during the partially automated driving; (2) determining whether or not the driver wishes to control the vehicle manually using a variable; (3) ending the partially automated driving and converting steering movements applied by the driver into steering movements of the motor vehicle via a front-axle actuator unit irrespective of the current rotational angle of the steering wheel, if the driver wishes to control the vehicle manually. The variable acquired during partially automated driving may be any of the following: a driver gripping force applied to the steering wheel, a driver torque applied to the steering wheel, deflection of the steering wheel, a gradient of the driver gripping force to the steering wheel, a gradient of the driver torque applied to the steering wheel, and deflection gradient of the steering wheel.

Abstract: Methods and apparatus are disclosed herein to center a steering wheel. An example vehicle includes a steering assistance system, an axle including a wheel, memory, and a processor to execute instructions to identify a first position of the wheel, detect a request to move the wheel to a second position, adjust the wheel from the first position to the second position via the steering assistance system, disengage the steering assistance system, the disengagement of the steering assistance system to cause the wheel to move to a third position, the third position offset from the second position by an angular offset in a first direction, adjust the wheel to a fourth position, the fourth position offset from the second position by the angular offset in a second direction different than the first direction, and disengage the steering assistance system, the disengagement of the steering assistance system to cause the wheel to move to the second position.

Abstract: The embodiments of the present disclosure relate to a motor control device and method, more particularly, a motor control device and method capable of improving an uncomfortable feeling in motor control by minimizing the control stop time by classifying the operation in the transition period of a control right to another motor control device according to a failure type, in the case of a failure of the motor control device having the control right in the motor control system of the redundancy structure.

Abstract: The present disclosure discloses a computer-implemented method for a pitch angle recognition of a steering column in a vehicle. In aspects, the computer-implemented method includes measuring first acceleration data using a first acceleration sensor and measuring second acceleration data using a second acceleration sensor. The computer-implemented method further includes determining drift data of at least one of the first acceleration sensor and the second acceleration sensor based on the first acceleration data and the second acceleration data. Additionally, the computer-implemented method includes determining a pitch angle of the steering column based on the drift data, the first acceleration data, and the second acceleration data.

Abstract: A conveyance device including a frame and at least one wheel coupled to the frame. The device further includes a storage compartment coupled to the frame, where the storage compartment has a pair of opposed side walls configured such that at least a portion of at least one side wall has an upper edge that is less than 49 inches above a bottom of the wheel to enable manual loading of the storage compartment. The conveyance device further includes a conveyor positioned in the storage compartment, wherein the conveyor is positioned to convey items in the storage compartment at least partially upwardly and out of the storage compartment.

Abstract: A support structure having at least one connecting member, a shaft, at least one axle transversally connected to the shaft and at least one resilient member for connecting the at least one support wheel assembly to a frame of a track system is disclosed. The at least one resilient body defines an aperture, in which one of first and second portions of the shaft is received, and has an inner portion that is fixedly connected to the one of first and second portions and an outer portion that is fixedly connected to the at least one connecting member. Upon resilient deformation of the at least one resilient member, the shaft is rotatable, and the at least one axle is pivotable, about the longitudinal axis. The at least one resilient body biases the shaft toward an initial position upon rotation thereof. A track system having the support structure is also disclosed.