Shock-absorbing barrier for road uses

The shock-absorbing barrier (1) made of plastic material comprises a number of main bodies (2) consecutively interconnected in mutual alignment relationship and exhibiting each a substantially parallelepiped and horizontally elongated configuration. Each main body (2) consists of a base wall (4), a top wall (5), two side walls (6) each at either end of the main body, a front wall (7) exhibiting a plurality of absorption recesses (7a) extending in a substantially vertical direction over the whole height of the front wall and a rear wall (8) provided with a plurality of longitudinal parallel ribs (8a) and having a sectional profile matching the shape of a guard-rail (11) against which the barrier (1) is located in abutment. Each main body (1) is hollow at the inside to be filled with a liquid or other filling material.