This work tackles the study of longitudinal stability of road platforms movement for transporting no gauge equipments; hereabout type (1+2) axles. In the effected analyze it is considered the effect of the assembly weight, of the forces of inertia and of the ones due to wind action, when climbing the ramp and also when descending the slope. At the same time it may be considered or not the effect introduced by the dampers, tires and the road surface deformability over the movement stability in the earlier mentioned conditions.
