Method of manufacturing articles

Claim 1

A wheel stop barrier for automotive vehicles comprising: a first member having an inverted v-shaped cross section and including upwardly convergent side walls, a normally horizontally disposed top wall interconnecting the upper ends of the side walls and opposed end walls interconnecting the ends of the top wall and the side walls, said walls defining an enclosed hollow space within said first member; said first member comprising an integral structure formed entirely from remelted scrap thermoplastic material and therefore being inexpensive to manufacture; said first member being characterized by sufficient structural rigidity to withstand repeated impact by automotive vehicles without significant change in shape; said first member being further characterized by a predetermined color; a second member having a second predetermined color characterized by a high visual contrast with respect to the first predetermined color of the first member so as to increase the visibility of the wheel stop barrier; and said second member having a predetermined geometrical configuration and being adapted for contact with the molten scrap thermoplastic material that is used to form the first member so that the molten scrap thermoplastic material flows around the predetermined geometrical configuration of the second member to form a mechanical interlock between the first and second members comprising the wheel stop barrier.