Abstract: There is described an apparatus for forming traffic regulating indicia on road surfaces by applying tape material on a predetermined marking line trace. The apparatus consists of the combination of a service motor-van provided with steering means and driven by a first operator, and of a tape material applicator subassembly connected to and serviced by said motor-van and provided with its own steering means designed to be acted upon by a second operator, and with sight and collimation means designed for being collimated with said trace by said second operator which compensates for differences between the actual path of said motor-van and the marking line to be exactly provided.

Abstract: There are described elements designed to be partially embedded and secured in a marking layer on a roadway pavement. Each element consists of an aggregate including a multiplicity of tiny hard and sharp particles, such as crystalline chips, and/or light reflective particles, such as retrocollimating glass beads, in a high cohesion resinous binder network, such as of an epoxy or a polyurethane resin. The elements are exceptionally resistant to shocks and to shearing stresses and are capable of being progressively worn off by traffic, concurrently with the wearing off of the marking layer, while their ability to improve anti-skid proper and the nighttime visibility of the marked areas is unaffected by such wearing off.

Abstract: The disclosure describes an improved tape material for use on a roadway pavement to form a traffic regulating strip or other sign thereon. The new material has a twin-layer structure including a lower relatively thin support layer and an upper principal thicker layer formed of a composition having a high internal molecular cohesion and having hard crystalline particles and light-reflecting particles embedded therein at various levels, the particles having portions which emerge above the upper face of the material to impart good anti-skid characteristics and nighttime visibility thereto, these properties being maintained as the material is progressively worn by the traffic due to progressive emergence of more deeply embedded particles.