Couplable road vehicle comprising • an axle assembly for front wheels of a front wheelset comprising two wheels, and an axle assembly for rear wheels of a rear wheelset comprising two wheels; • a chassis comprising a front chassis portion on which is mounted the axle assembly for the front wheels of the front wheelset, and a rear chassis portion on which is mounted the axle assembly for the rear wheels of the rear wheelset; • front and rear couplings (10, 12) located on the front chassis portion and on the rear chassis portion, respectively, the front coupling being movable, alternately, between: - a coupled position, in which this front coupling interacts with a rear coupling that is identical to the rear coupling of this vehicle and located on a rear chassis portion of another vehicle, to mechanically attach, with no degree of rotational and yaw-wise freedom, the front chassis portion of this vehicle with the rear chassis portion of the other vehicle, and - an uncoupled position, in which these vehicles are detached from each other, the rear coupling being movable, alternately, between: - a coupled position, in which this rear coupling interacts with a front coupling that is identical to the front coupling of this vehicle and located on a rear chassis portion of another vehicle, to mechanically attach, with no degree of yaw-wise rotational freedom, the rear chassis portion of this vehicle with the front chassis portion of the other vehicle, and - an uncoupled position, in which these vehicles are detached from each other; this vehicle being characterized in that it comprises: • a central chassis portion equipped with a load holder; • a front articulation device, interposed between the central chassis portion and the front chassis portion, this front articulation device allowing the front chassis portion to pivot, with respect to the central chassis portion, about an articulation axis normal to a rolling plane of the vehicle, so as to modify an angle of articulation of the front of the vehicle; • a rear articulation device, interposed between the central chassis portion and the rear chassis portion, this rear articulation device allowing the rear chassis portion to pivot, with respect to the central chassis portion, about an articulation axis normal to a rolling plane of the vehicle, so as to modify an angle of articulation of the rear of the vehicle. • an axle assembly for front wheels of a front wheelset comprising two wheels, and an axle assembly for rear wheels of a rear wheelset comprising two wheels; • a chassis comprising a front chassis portion on which is mounted the axle assembly for the front wheels of the front wheelset, and a rear chassis portion on which is mounted the axle assembly for the rear wheels of the rear wheelset; • front and rear couplings (10, 12) located on the front chassis portion and on the rear chassis portion, respectively, - a coupled position, in which this front coupling interacts with a rear coupling that is identical to the rear coupling of this vehicle and located on a rear chassis portion of another vehicle, to mechanically attach, with no degree of rotational and yaw-wise freedom, the front chassis portion of this vehicle with the rear chassis portion of the other vehicle, and - an uncoupled position, in which these vehicles are detached from each other, the rear coupling being movable, alternately, between: - a coupled position, in which this rear coupling interacts with a front coupling that is identical to the front coupling of this vehicle and located on a rear chassis portion of another vehicle, to mechanically attach, with no degree of yaw-wise rotational freedom, the rear chassis portion of this vehicle with the front chassis portion of the other vehicle, and - an uncoupled position, in which these vehicles are detached from each other; • a central chassis portion equipped with a load holder; • a front articulation device, interposed between the central chassis portion and the front chassis portion, this front articulation device allowing the front chassis portion to pivot, with respect to the central chassis portion, about an articulation axis normal to a rolling plane of the vehicle, so as to modify an angle of articulation of the front of the vehicle; • a rear articulation device, interposed between the central chassis portion and the rear chassis portion, this rear articulation device allowing the rear chassis portion to pivot, with respect to the central chassis portion, about an articulation axis normal to a rolling plane of the vehicle, so as to modify an angle of articulation of the rear of the vehicle.