The invention relates to a vehicle provided with a system of support 12 is known in itself - the same way, on a support 3 from its trajectory and provided with at least one auxiliary wheel 1. The wheel 1 is bound to the frame 2 of the vehicle by means of a supporting part 22a of its axis of rotation and of a system 23, 24 of extreme of this support to the frame, which makes it possible to the wheel to be kept constantly in contact with a surface 3 of support with a known thereof which is parallel to the trajectory of the vehicle and of which the frame 2 is maintained at a distance d substantially fixed with a device 12 of the elastic stiffness, said system of link being such that, when the wheel is subjected to a force f contained in said bearing surface and exerting at the point of contact c of the wheel 1 with the surface 6, this force produces a reaction force q of the device of the elastic stiffness proportional to f tending to apply the wheel 1 against the surface 3. / p & & p & gt, 2004, in particular for application to the air cushions.
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