a towed vehicle equipped with a towing device which cannot move vertically (in relation to the trailer), and in which the axle(s) is (are) positioned close to the centre of gravity of the vehicle (whe, haagis, mille tiisel on jäigalt kinnitatud haagise, mille telg paikneb (teljed paiknevad) ühtlaselt koormatud haagise raskuskeskme lähedal nii, et vedukile kantakse üle ainult väike staatiline vertika