Provided is a vehicle which, when a pair of left and right wheels are displaced with respect to the vehicle body due to the difference in drive force between the wheels, the two wheels are reliably displaced vertically in opposite directions such that neither wheel is disproportionately displaced and such that both wheels are steered during said displacement of both wheels vertically in opposite directions. The pair of left and right front wheels (3) are rotatably supported by a front wheel support member (29). An electric motor (25) applies drive torque to the front wheels (3) individually. A vehicle body frame (7) supports the front wheel support member (29) to allow rotation about a forwardly inclined steering axis (Lf). By allowing rotation of the front wheel support member (29) about the steering axis (Lf), the front wheels (3) are displaced relatively to one another vertically in opposite directions with respect to the vehicle body frame (7) and the front wheels (3) are steered. The front wheel support members (29) rotate due to the difference in torque applied to the front wheels (3) by the electric motor (25).

A wheel suspension for a vehicle with a supporting vehicle element includes at least one pair of single-sided swing arms. Each single-sided swing arm is associated with a hydraulic cylinder, which is linked to the single-sided swing arm and/or the supporting vehicle element. Each hydraulic cylinder is subdivided in a fluid-tight manner into two chambers.

Motorcycles are provided which include a frame, two front steering wheels, a steering pipe rotatably connected to the frame and rigidly connected to two supporting assemblies, one for each front steering wheel and a steering group consisting of two pairs of transversal armsupper front, lower front, upper rear and lower reararranged inverted at the opposite sides of a central steering pipe and laterally connected through two lateral posts. On each of the supporting assemblies the fixed portions of two telescopic elements may be constrained. Each pair of telescopic elements may be cantilever-mounted with respect to the steering wheel.

Motorcycles are provided which include a frame, two front steering wheels, a steering pipe rotatably connected to the frame and rigidly connected to two supporting assemblies, one for each front steering wheel and a steering group consisting of two pairs of transversal armsupper front, lower front, upper rear and lower reararranged inverted at the opposite sides of a central steering pipe and laterally connected through two lateral posts. On each of the supporting assemblies the fixed portions of two telescopic elements may be constrained. Each pair of telescopic elements may be cantilever-mounted with respect to the steering wheel.

Provided is a vehicle which, when a pair of left and right wheels are displaced with respect to the vehicle body due to the difference in drive force between the wheels, the two wheels are reliably displaced vertically in opposite directions such that neither wheel is disproportionately displaced and such that both wheels are steered during said displacement of both wheels vertically in opposite directions. An electric motor applies drive torque to the front wheels individually. A vehicle body frame supports the front wheel support member to allow rotation about a forwardly inclined steering axis (Lf). By allowing rotation of the front wheel support member about the steering axis (Lf), the front wheels are displaced relatively to one another vertically in opposite directions with respect to the vehicle body frame and the front wheels are steered.

Provided is a vehicle which, when a pair of left and right wheels are displaced with respect to the vehicle body due to the difference in drive force between the wheels, the two wheels are reliably displaced vertically in opposite directions such that neither wheel is disproportionately displaced and such that both wheels are steered during said displacement of both wheels vertically in opposite directions. An electric motor applies drive torque to the front wheels individually. A vehicle body frame supports the front wheel support member to allow rotation about a forwardly inclined steering axis (Lf). By allowing rotation of the front wheel support member about the steering axis (Lf), the front wheels are displaced relatively to one another vertically in opposite directions with respect to the vehicle body frame and the front wheels are steered.

The vehicle includes: a chassis which includes a front cross-member and a rear cross-member; a nacelle receiving a person or a load, pivotally mounted relative to the central part of the cross-members about a substantially longitudinal hinge axis, the center of gravity of the nacelle being situated below said hinge axis; a front train and a rear train, each including two movement supports on the ground, each movement support being connected to the end part of the corresponding cross-member by a connecting system; the cross-members, situated in the upper part of the nacelle, being separate pieces linked together only by the nacelle, via the hinge axis, so as to be able to pivot about the hinge axis independently of one another.

The vehicle includes: a chassis which includes a front cross-member and a rear cross-member; a nacelle receiving a person or a load, pivotally mounted relative to the central part of the cross-members about a substantially longitudinal hinge axis, the center of gravity of the nacelle being situated below said hinge axis; a front train and a rear train, each including two movement supports on the ground, each movement support being connected to the end part of the corresponding cross-member by a connecting system; the cross-members, situated in the upper part of the nacelle, being separate pieces linked together only by the nacelle, via the hinge axis, so as to be able to pivot about the hinge axis independently of one another.