Abstract: The Dynamic Vehicle Separation System (DVSS) according to the present application allows properly equipped vehicles in traffic to maintain safe and optimal separation distances (i.e., following distances), which are automatically and continually calculated based on numerous criteria. Vehicles are equipped with Dynamic Vehicle Separation Controllers (DVSCs) that communicate with each other to maintain proper separation distances among the vehicles.

Abstract: An autonomous vehicle including a sensor system that outputs a sensor signal indicative of a condition of the autonomous vehicle. The vehicle also includes a communication system including a speaker. Based upon a profile of the passenger, the autonomous vehicle can determine that support is to be provided audibly to the passenger when the support is provided to the passenger. Moreover, the autonomous vehicle can detect occurrence of an event that has been identified as potentially causing discomfort to the passenger based upon the sensor signal output by the sensor system. Responsive to detecting the occurrence of the event, and in accordance with the profile of the passenger, the autonomous vehicle can cause the speaker to output an audible support message. Content of the audible support message is based on the detected event, and the audible support message solicits feedback from the passenger of the autonomous vehicle.

Abstract: Systems and methods for controlling the motion of an autonomous are provided. In one example embodiment, a method includes obtaining, by one or more computing devices on-board an autonomous vehicle, state data descriptive of a current state of an object that is proximate to the autonomous vehicle. The method includes determining, by the one or more computing devices, one or more features associated with the object based at least in part on the state data. The method includes determining, by the one or more computing devise, a vehicle action for the autonomous vehicle based at least in part on a machine-learned model and the one or more features associated with the object. The vehicle action includes stopping a motion of the autonomous vehicle or moving the autonomous vehicle past the object.

Abstract: A track maintenance machine includes a combustion engine mechanically connected by a drive shaft to an electric generator/motor unit. The electric generator/motor unit is connected by a mechanical drive unit to a hydraulic pump. A power accumulator is connected by an electrical supply line to the generator/motor unit and to drives which can be actuated electrically. It is thus possible to mainly electrically supply all of the drives.

Abstract: A railcar steering bogie includes: a bogie frame supporting a bolster such that the bolster is swingable relative to bogie frame about a vertical axis; two wheelsets; axle box suspensions including respective axle beams coupling corresponding axle boxes to bogie frame, the axle boxes accommodating respective bearings supporting corresponding axles; and a steering mechanism steering at least one of the two wheelsets in accordance with the bolster's swinging relative to the bogie frame. The steering mechanism includes: a steering lever configured to turn relative to the bogie frame about fulcrum axis; a coupling link coupling the bolster and steering lever and configured to operate in conjunction with the bolster's swinging relative to the bogie frame; and at least one steering link coupling steering lever and axle beam and configured to steer the corresponding wheelset by displacing corresponding axle box through the corresponding axle beam in conjunction with steering lever's turning.

Abstract: A railcar steering bogie includes: a bogie frame supporting a bolster such that the bolster is swingable relative to the bogie frame about a vertical axis; two wheelsets each including an axle and a pair of wheels; and a steering mechanism configured to steer at least one of the two wheelsets in accordance with the swinging of the bolster relative to the bogie frame. The steering mechanism includes: a steering lever configured to turn relative to the bogie frame about a fulcrum axis; a coupling link coupling the bolster and the steering lever and configured to operate in conjunction with the swinging of the bolster relative to the bogie frame; and a steering link coupled to the steering lever and configured to steer the wheelset in conjunction with the turning of the steering lever. The steering link is coupled to the steering lever by a pin member.

Abstract: An emergency arrest device for a zip line is disclosed. The emergency arrest device is designed to tension and control a slide-and-grip knot, such as a Prusik knot, that is tied on the zip line. The device includes a mirror-image set of sidewalls, a front endwall connected between the pair of sidewalls at a front end of the device, and a rear endwall connected at a rear end of the device. The front and rear endwalls have openings sized to permit passage of the zip line therethrough. A tail fixation assembly including a clamp is mounted in the rear of the device. A knot-body control assembly is mounted in the front of the device. The knot-body control assembly includes arms that are resiliently biased to push the body of the slide-and-grip knot rearwardly when the device is impacted.

Abstract: A system includes a location determining circuit configured to acquire position information of a vehicle system moving along a route. The system also includes a controller circuit having one or more processors. The controller circuit is configured to calculate curvatures of the route, based at least in part on the position information, to form a curvature waveform. The controller circuit is further configured to generate a route map based on the curvature waveform.

Abstract: An anomaly determination device includes a changeover force measurement unit that measures a changeover force output by a driving device, the driving device outputting a changeover force for switching a direction of a branch rail whose direction is variable, a voltage measurement unit that measures a voltage supplied to the driving device, a current measurement unit that measures a current flowing through the driving device, and an anomaly determination unit that determines whether or not there is an anomaly in the branch rail, there is an anomaly in the driving device, and there is an anomaly in power supplied to the driving device on the basis of the magnitude of the changeover force, the magnitude of the voltage, and the magnitude of the current.

Abstract: A system and method for inspecting a railway track a calculating plate cut and/or rail seat abrasion (RSA) based on rail head elevation and crosstie surface elevation measurements and an estimate of rail height.

Abstract: A system (e.g., a control system) includes a sensor configured to monitor an operating condition of a vehicle system during movement of the vehicle system along a route. The system also includes a controller configured to designate one or more operational settings for the vehicle system as a function of time and/or distance along the route.

Abstract: A system for selectively disabling highway crossing equipment includes a timer for controlling a maximum out of service time for the highway crossing equipment, a switch for controlling disablement of the highway crossing equipment, and control circuitry responsive to the timer and the switch. The control circuitry disables the highway crossing equipment in response to an input received from the switch before the maximum out of service time has been reached and re-enables the highway crossing equipment in response to a subsequent input from the switch received before the maximum out of service time has been reached. The control circuitry places the highway crossing equipment in a failsafe condition when the maximum out of service time has been reached without receiving the subsequent input from the switch.

Abstract: A navigation system uses a dead reckoning method to estimate an object's present position relative to one or more prior positions. In some embodiments, the dead reckoning method determines a change in position from the object's heading and speed during an elapsed time interval. In embodiments suitable for use with wheeled objects, the dead reckoning method determines the change in position by measuring the heading and the amount of wheel rotation. Some or all of the components of the navigation system may be disposed within a wheel, such as a wheel of a shopping cart.

Abstract: The utility cart of the present application comprises a frame, and a plurality of wheels supported by the frame. In at least one embodiment, the frame comprises at least one wall which defines a recessed upper cavity, and a front cavity. The utility cart further comprises a plurality of parts boxes removably disposed within the front cavity; and a handle disposed in proximity to a bottom of the upper cavity and further disposed in proximity to a top of the front cavity.

Abstract: A stroller is provided with the ability to removably couple and decouple a seat from the stroller as needed. The stroller can include a stroller frame. The stroller can also include one or more front wheels attached to the stroller frame and one or more rear wheels attached to the stroller frame. The stroller can also include a first seat coupled to the stroller frame. The stroller can include first and second seat attachment housings. Each of the seat attachment housings can include a cavity for receiving a corresponding one of the first and second seat attachment adapters. Each of the seat attachment housings can also include a door or cover to prevent access to the respective cavity when not in use. The seat attachment adapters can be coupled to the respective seat attachment housings and a second seat can be coupled to the seat attachment adapters.

Abstract: A vehicle has a frame, a motor, a driveshaft operatively connected to the motor, a front differential operatively connected to the driveshaft, a pair of front half-shafts operatively connecting the front differential to front wheels, at least one rear wheel, a steering wheel, a steering column operatively connected to the steering wheel, a rack and pinion assembly operatively connected to the steering column, the rack and pinion assembly being disposed rearward of the front differential, a right tie rod having a left end operatively connected to a rack of the rack and pinion assembly and a right end operatively connected to the right wheel, and a left tie rod having a right end operatively connected to the rack and a left end operatively connected to the left wheel. The inner ends of the tie rods are disposed forwardly of a vertically and laterally extending central plane of the rack.

Abstract: A rack housing and a reduction drive housing accommodate a ball screw mechanism and a reduction drive. Within the rack housing and the reduction drive housing, a gap is provided between the left end of a nut and the rack housing, and a gap is provided between the right end of the nut and the rack housing. A groove serving as a communication path in communication with the gaps on both axial sides of the nut is provided in the outer circumferential surface of the nut. The groove is provided so as to avoid a recirculation path provided in the nut. The groove is provided axially and rectilinearly from the end of the nut that is located on the side opposite to a flange, to the flange and is provided along the flange.

Abstract: A steering system equipped with a linear electric actuator includes: a casing, a shaft slidably coupled to the casing with respect to a sliding axis and provided with an end that protrudes externally from said casing, an electric motor, which is housed in the casing and provided with a stator and a rotor that is axially hollow and coaxial with the shaft, in which the rotor is operable in rotation with respect to an axis of rotation parallel to the sliding axis, a nut screw integrated in rotation with the rotor of the motor and provided with an internal thread, the nut screw includes a first cylindrical portion and a second cylindrical portion, axially arranged side by side, a joint adapted to make the first cylindrical portion and the second cylindrical portion integrated in rotation, and a helical groove surface integrated with the shaft and coupled to the internal thread.

Abstract: The present disclosure relates to an electronic control unit of a steering system for a vehicle. The electronic control unit includes: a case having shaft supporting portions formed at ends of sides facing each other; a connector electrically connected with a substrate and coupled to the case through a rotary shaft coupled to ends of the shaft supporting portions such that that direction of connecting ports to be connected with a harness is adjusted, in which a protrusive first coupling portion is formed at any one of the shaft supporting portion and the rotary shaft and a second recessed coupling portion that is coupled to the first coupling portion is formed at the other one so that the connector is coupled and fixed to the case.

Abstract: A hydraulic steering unit (1) is described comprising a supply port arrangement having a pressure port (P) connected to a main flow path (2) and a tank port (T) connected to a tank flow path (3), a working port arrangement having a left working port (L) connected to a left working flow path (4) and a right working port (R) connected to a right working flow path (5), a bridge arrangement (21) of variable orifices (A2L, A3L, A2R, A3R) having a first left orifice (A2L) connected to the main flow path (2) and to the left working flow path (4), a first right orifice (A3R) connected to the main flow path (2) and to the right working flow path (5), a second left orifice (A3L) connected to the left working flow path (4) and to the tank flow path (3), and a second right orifice (A3R) connected to the right working flow path (5) and to the tank flow path (3). Such a steering unit allows steering a vehicle with low energy consumption.

Abstract: An articulated work vehicle with linked front and rear frames includes a joystick lever, a force imparting component, a speed sensor, and a controller. The joystick lever is configured to change a steering angle of the front frame with respect to the rear frame by operation by an operator. The force imparting component is configured to impart an assist force or a counterforce to operation of the joystick lever by the operator. The speed sensor is configured to sense speed of the work vehicle. The controller is configured to control the force imparting component so as to impart the assist force or the counterforce according to the speed sensed by the speed sensor.

Abstract: A utility vehicle includes a frame, a power source, and a plurality of steerable structures. Ground engaging members are connected to the steerable structures. An operator seating area includes a steering control and a speed control. Controllers receive input from the steering control and the speed control. Motors drive the ground engaging members at different speeds and in different directions. A controller integrates a steering input with a speed input to effect rotation of the steerable structures and effect rotation of the ground engaging members. The steering control, speed control, controllers, steerable structures, and motors are configured to work together to control the rotational speed of all of the ground engaging members based upon a steering angle input and the lateral side the ground engaging member is connected to. Other examples include braking mechanisms, adjustable track width, and a sealed tubular frame.

Abstract: A tracked all-terrain vehicle is shown which includes an internal combustion engine, an electric generator, and a plurality of electric motors which drive movement of the tracks of the tracked all-terrain vehicle.

Abstract: A regenerative differential includes torque members, and a gear assembly that includes a primary gear set and a plurality of secondary gear sets. The primary gear set is configured to transfer torque between the secondary gear sets and first and second torque members. The first secondary gear set transfers torque between the primary gear set and a third torque member. The second secondary gear set transfers torque between the primary gear set and a fourth torque member. The gear assembly is configured to maintain a fixed relationship between torque member rotation velocities ?1, ?2, ?3, and ?4, such that ?3=ML?2+?L?1, ?4=MR?2+AR?1, ML and ?L are functions of a ratio of the first secondary gear set, and MR and ?R are functions of kR of a ratio of the second secondary gear set.

Abstract: A system for assisting in reversing of a vehicle-trailer combination includes a vehicle steering system and a controller. The controller outputs a steering signal to the steering system to maintain the vehicle-trailer combination along a straight backing path and determines a straight-backing offset of a hitch angle in the vehicle-trailer combination as a proportion of an integral of a measured characteristic of the vehicle-trailer combination that varies from a desired zero value.

Abstract: A system controls steering of a motor vehicle in case of an imminent collision with an obstacle. The vehicle includes a system to locate the vehicle relative to its lane and to determine a lateral deviation from the lane center, a determination unit for determining the presence of obstacles, a gyrometer for measuring the rotation speed of the vehicle, and a steering device, the steering angle of which can be controlled based on the measurement of a steering angle sensor or the steering torque of which can be controlled. The control system includes a perception device for determining the maximum lateral distance available for movement of the vehicle relative to obstacles, a decision device for transmitting a correction request based on the trajectory of the vehicle and on the lateral maximum distance, and an intervention device for controlling the steering device to correct the trajectory of the vehicle.

Abstract: A method for controlling an automated parking operation in which a motor vehicle is controlled autonomously on a route between a drop zone and a parking space includes steps of detecting that a person is on board the motor vehicle during an autonomous driving process, determining that permission does not exist for transporting the person on the trip, and carrying out one or more actions.

Abstract: A cross car beam assembly is provided herein. A composite beam structure extends transversely across a vehicle. A vehicle floor bracket is disposed below the composite beam. A composite reinforcement has a first portion fixedly engaged to the beam structure and a second portion engaged to the vehicle floor bracket.

Abstract: A front vehicle-body structure of a vehicle, comprising a dash panel, a pair of right-and-left hinge pillars, a suspension tower, and a heat-insulating inner upper portion connecting the suspension tower and the dash panel, wherein the dash panel comprises a dash panel body, a dash cross member interconnecting respective lower portions of the hinge pillars, and a dash-panel reinforcing member joined to a portion which is positioned above the dash cross member, the heat-insulating inner upper portion is connected to the dash panel body via the dash-panel reinforcing member, and the dash-panel reinforcing member comprises a leg portion which connects the heat-insulating inner upper portion and the dash cross member and a bridge portion which interconnects respective rear ends of the heat-insulating inner upper portions.

Abstract: A chassis (200) embodiment having a geometrical structure surrounding the side and upper parts a vehicle (100), and with this geometrical structure, providing high damping effect in case of an accident, and it is characterized in comprising; a lower chassis extension (210) having front arms (211) configured at the upper part of said vehicle (100) and an upper dampener chassis (220) configured on said lower chassis extension (210).

Abstract: A reinforcement unit for a side sill of a vehicle is provided. The side sill includes an inner panel and an outer panel having an upper flange and a lower flange. The reinforcement unit includes an outer reinforcement member located between the inner panel and the outer panel of the side sill, an inner reinforcement member located between the inner panel and the outer panel of the side sill, and straps attached to the upper flange and to the lower flange of the outer panel and spanning from the upper flange to the lower flange between the outer reinforcement member and the inner reinforcement member, the inner reinforcement member being attached to the straps.

Abstract: A mounting structure for a curtain airbag device includes: a first pillar extending along a vehicle upper-lower direction; a second pillar disposed on a vehicle rear side at a predetermined interval with respect to the first pillar, and extending along the vehicle upper-lower direction; a transparent member interposed between the first pillar and the second pillar; a front pillar garnish covering the first pillar and the second pillar and having a lower end portion protruding along at least one of a vehicle front-rear direction and a vehicle width direction; and a curtain airbag device configured to include a curtain airbag, configured to be inflation-deployed in a curtain shape in a vehicle cabin side portion, and having a front end portion fixed at a position in the first pillar or the second pillar corresponding to the lower end portion of the front pillar garnish.

Abstract: A pillar structure of a vehicle including a glass attachment surface configured to have a windshield of the vehicle or a rear window of the vehicle attached thereto, a side part outer surface configured to have an upper edge of the fender panel extending in a front-rear direction of the vehicle connected thereto downwardly, a protruding corner portion configured to be provided to protrude to the fender panel along a pillar extending direction at a corner of a lower end on the side part outer surface on the glass attachment surface side such that an angle formed by a protruding direction and the upper edge of the fender panel is in a predetermined acute angle range in a side view, and a recess bead configured to be formed on the glass attachment surface along the protruding corner portion.

Abstract: A reinforcing device for reinforcing a structural element in a motor vehicle includes a support, a reinforcing element and an adhesive. The support has a first surface for orientation towards a first wall of the structural element and a second surface for orientation towards a second wall of the structural element. The reinforcing element is designed for arrangement between the support and the first wall of the structural element. The adhesive is designed to connect the support to the reinforcing element and to connect the support and the reinforcing element to the structural element.

Abstract: A recessed portion is formed at a lower face of a frame member provided at a vehicle rear portion and having a closed cross section extending in a vehicle longitudinal direction, where a damper of a rear suspension is inserted into and fixed. A front portion of the frame member is joined to a side sill extending in the vehicle longitudinal direction at a position offset outwardly from the frame member. Branch-shaped closed cross sections branching off from the closed cross section inwardly and outwardly relative to the damper are formed at a recessed-portion corresponding position. A front portion of the frame member located in front of the recessed-portion corresponding position extends in an oblique direction forwardly and outwardly and a front end of the frame member is joined to a rear portion of the side sill.

Abstract: A fender assembly for an agricultural tractor including a carrier bracket which supports a wheel fender adjacent to a vehicle wheel. A steering mechanism is provided as part of the fender assembly, such that the wheel fender can be rotated relative to the carrier bracket. Accordingly, the rotation of the wheel fender can be controlled based on a steering signal generated by the vehicle steering system, to ensure that the wheel fender accurately follows the movement of the adjacent tractor wheel.

Abstract: A golf car includes a frame including main frames and cross members, an undercover that includes a front cover and a rear cover and is supported by the frame, and an engine room including an underside defined by the undercover. The front cover includes a rear end region provided with pawls. The rear cover includes a front end region provided with pawls. All of the pawls are engaged with the cross member. The front cover is fixed to the cross member and the main frames with fasteners, and the rear cover includes a rear end region fixed to the main frames with fasteners. The front cover and the rear cover include water drainage holes.

Abstract: A recessed portion is formed at a frame member provided at a rear portion of a vehicle body and having a closed cross section extending in a vehicle longitudinal direction such that a part of a lower face of the frame member is recessed upwardly, where a damper of a rear suspension is inserted and fixed. Closed cross sections are formed at a position corresponding to the recessed portion, in a longitudinal direction, of the frame member. The closed cross sections are configured to branch off from the closed cross section inwardly and outwardly in the vehicle width direction relative to the damper. A ridgeline extending in the vehicle longitudinal direction is formed at least at a portion of the frame member which is positioned in front of the recessed portion.

Abstract: A stabilizer designed to be used in a single shear fastening configuration to secure a composite panel to an adjacent material is disclosed. The front side of the composite panel is flush with the adjacent material and the back of the composite panel is flush with the stabilizer. As a result, the adjacent material and the stabilizer sandwich the composite panel and mimic a double shear configuration. The stabilizer helps to prevent fastening devices (e.g., screws, rivets, nails) from pulling through the composite panel and adds to the mechanical strength of the fastening application.

Abstract: A vehicle or trailer assembly is disclosed comprising at least one fan positioned on an exterior of the vehicle or trailer, wherein the at least one fan redirects or accelerates air moving over, around, or through the exterior of the vehicle or trailer. Also disclosed is a fan assembly comprising a manifold configured to be positioned on an outside surface of a vehicle, along an axis transverse to a direction of travel of the vehicle. The fan assembly also includes a plurality of motorized fans rotatably mounted along the axis of the manifold, such that the motorized fans are configured to accelerate air passing along the outside surface or within an exterior of the vehicle, in the direction of travel of the vehicle.

Abstract: A vehicle with a body, two front wheels and at least one rear wheel. An airfoil is mounted to the body with adjustability in angle of attack, and at least one of the front wheels is driven to permit acceleration to a cruise speed at which the airfoil provides sufficient lift to raise the rear wheel off the road while the front wheels maintain contact with the road. Lift may be modified by at least modifying velocity and modifying the angle of attack of the airfoil. This vehicle provides advantages in comfort and efficiency due to reduced friction in contact with the road and imperfections on the road. The wing may also be adjusted to increase downward force on the rear wheel.

Abstract: A crawler includes a crawler main body (a rubber crawler main body (12)), a tensile body (70), guide protrusions (16), and flat surfaces (40). The tensile body (70) is provided with a flat portion (72) that is arranged along a width direction of the crawler main body and a slanting portion (74) that is slanted and arranged at a width direction outer side of the crawler main body relative to the flat portion (72). The guide protrusions (16) are formed at an inner peripheral face of the crawler main body at a width direction middle portion of the crawler main body. The flat surfaces (40) are formed at the width direction outer sides of the crawler main body relative to the guide protrusions (16). Turning wheels (a driving wheel (100), an idling wheel (102) and rolling wheels (104)) provided at a vehicle roll on the flat surfaces (40).

Abstract: An endless track for traction of an off-road vehicle, such as an agricultural vehicle, an industrial vehicle (e.g., a construction vehicle) or a military vehicle, is provided. The endless track comprises an elastomeric belt-shaped body comprising an inner surface for facing wheels of the vehicle and a ground-engaging outer surface for engaging the ground. The endless track also comprises a plurality of elastomeric lugs, such as drive/guide lugs projecting from the inner surface and/or traction lugs projecting from the ground-engaging outer surface. An elastomeric lug may have a material composition defining an arrangement of zones of different materials which comprises a plurality of zones of different elastomeric materials. The elastomeric lug may exhibit a desired variation of a material property (e.g., a modulus of elasticity) across the arrangement of zones of different materials. A zone of the elastomeric lug may have a dedicated function, such as a sacrificial zone or a wear indicator zone.

Abstract: A bicycle seat attachment device for attaching a bicycle seat to a bicycle seat post is disclosed having a pin and a receiver. The pin has an upper pin and a lower pin that are dimensioned and configured to receive rails of the bicycle seat. The receiver is disposed on the bicycle seat post. The lower pin has a depending male portion that is dimensioned and configured to a female central opening of a receiver. The female central opening extends between a top surface and a bottom surface of the receiver. The depending male portion rotates within the female central opening between a restricted position and a release position. In the restricted position, the male portion locks the bicycle seat to the receiver and when the male portion is in a release position, the bicycle seat is releasable from the receiver.

Abstract: A motorcycle (1) including:—a motorcycle body (2,3,4) extending along a longitudinal axis (L-L) and having a front part (2), a tail part (4) and a central part (3) included between the front part (2) and the tail part (4);—at least two wheels (5,6) constrained to the motorcycle body (2,3,4), including a front wheel (5) and a rear wheel (6);—a traction engine (7) constrained to the motorcycle body (2, 3, 4) and operatively connected to at least one of the wheels (5, 6);—at least one headlight (12) fixed to the front part (2) and at least one rear light (14) fixed to the tail part (4);—at least one kickstand (100) adapted to be moved in order to selectively assume a resting operating position and a working operating position, wherein, in the working operating position, the kickstand has at least one end portion leaning against a ground portion being placed laterally and/or under the motorcycle body;—one first auxiliary lighting device (50) adapted to light the kickstand (10).

Abstract: A method for guiding a cyclist on a bicycle equipped with a bicycle handlebar. The method includes: on each side of a central zone in which the bicycle handlebar is attached to the bicycle handlebar stem, separately illuminating a proximal light-emitting zone located next to the central attachment zone or a distal light-emitting zone depending on the route to be followed.

Abstract: There is provided a snowmobile that has a frame having a longitudinally extending tunnel, a steering assembly operatively connected to the frame, at least one ski operatively connected to the frame and to the steering assembly, an endless drive track operatively connected to the frame, a motor supported by the frame and is operatively connected to the steering assembly and to the endless drive track for propelling the snowmobile, a straddle-type seat disposed above the tunnel and adapted to accommodate a rider, and a flap assembly. The flap assembly has a flap, a mounting body connected to a rear portion of the tunnel, and at least one toolless fastener extending generally longitudinally and selectively connecting the flap to the mounting body. There is also provided a flap assembly kit for a snowmobile and a method for installing a flap on a rear portion of a tunnel of a snowmobile.

Abstract: A two-wheeled self-balancing scooter includes a scooter body, two wheels separately located at two ends of said scooter body, a wheel motor built in each said wheel, a control circuit and a power supply fixed inside the scooter body and configured for controlling the movement of the two wheels, wherein the scooter body is made of a single frame, a connector fixed to each of said wheel wherein the single frame connects with each wheel through the connector, a pressure sensor located between each connector and the single frame wherein the pressure sensors are electrically linked with said control circuit, wherein the control circuit controls different speeds between said two wheels to complete a turn according to the different pressures detected at the pressure sensor at each wheel when the gravity center of the user shifts towards one wheel at turning.

Abstract: A cycle includes a fork and a first wheel is mounted to the fork. A steerer tube is connected to the fork. The steerer tube has a longitudinal axis. The cycle includes a pair of second wheels. A pair of downtubes is rotationally mounted to the steerer tube about the longitudinal axis. The pair of downtubes have a fixed inclination with respect to the longitudinal axis. Each one of the down tubes respectively connects one wheel of the pair of second wheels to the steerer tube for pivoting the pair of second wheels together and apart.

Abstract: An electric vehicle includes a front frame (1), a rear frame (2), and a sliding seat (3). The front frame has a first gear set (14). A movable rotation shaft (15) connects the front frame and the rear frame. The rear frame has a track (21). A sliding support (22) is mounted on the track and connects a linear driver (23) which connects a connecting member (25) which connects a connecting shaft (26) which connects the front frame. A wheel support (27) connects the rear frame and an auxiliary wheel (28) and has a second gear set (29) meshing with the first gear set. A linkage (4) connects the rear frame and support rack (31). A link unit (41) connects the linkage and the sliding support. The sliding seat is mounted on a seat support (33) which is mounted on the support rack.