Abstract: Protective or delimiting barrier for road traffic includes a plurality of hollow separating elements. Each of the separating elements includes a cylindro-convex end and a cylindro-concave end. Each of the separating elements is capable of containing a shock absorbing volume of air. A lower flexible member is provided and is one of a strap and a band. The lower flexible member extends through at least one separating element and into an adjacent separating element. An upper flexible member is provided and is one of a strap and a band. The upper flexible member extends through at least one separating element and into an adjacent separating element. The upper flexible member is arranged above the lower flexible member. The plurality of separating elements are connected end-to-end such that the cylindro-convex end of one separating element is disposed adjacent the cylindro-concave end of another separating element.