To make the axle load distribution of front two axles during braking close to that during normal traveling and to enhance degrees of freedom for the size and shape of an equalizer link by decreasing the movement of axle load from a front front axle to a front rear axle that occurs during braking, in a front-two-axle vehicle whose front two axles are suspended by an equalizing suspension system.

A variable-damping-force-type shock absorber 56 or an oil cylinder is connected between a pin 40 and a frame 10 on an equalizer link 39 transmitting the relative movements of the leaf spring 34 of a front front axle 15 and the leaf spring 47 of a front rear axle 17 in opposite directions, and during braking either the damping force of the shock absorber 56 is increased or the cylinder is oil-locked.