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Definition

Road markings are defined as lines, patterns, words or other devices, except signs, set into applied or attached to the carriageway or kerbs or to objects within or adjacent to the carriageway, for controlling, warning, guiding and informing the users.

Road Marking started with normal household paint. This wore off easily and was not so visible at night. Improvement was made by adding chlorinated rubber to the paint together with reflective glass beads. This paint is still widely used in less developed countries. Hot melt thermoplastic road marking material was put to use in the sixties and has become a major marking material since.

Why Road Markings?

Safety on roads is a necessity and a must for every country. Safety on Roads is a very complex subject where the surface, the layout of the road, the top layer of the asphalt surface, the entire road signals play a very important key role besides driver education, behaviour of drivers, vehicle safety, etc.

Road Markings with their guiding lines, stop bars, directional arrows, etc., comprise horizontal signs and traffic rules and thus an information for the driver. In consequence they decide the traffic safety and also a guiding function for a smooth and quite traffic situation. To fulfill all the requirements, that means the optical guidance, seperation of traffic as well as traffic guidance in general, road markings have to be clearly visible for the driver during day and night.

Besides the durability of the marking its visibility by day and night is another important safety factor. Consequently we classify between the day-time and night-time visibility.

One uses the terms daylight visibility of the road marking according to the recognition of the optical attributes of the marking on the road surface. This recognition is mainly determined by the brightness of the surface of the road marking. The brightness is determined by a special light density factor which is influenced by the contents of titanium dioxide powder and the surface structure. The rougher the surface structure the lower is the light density factor. Measured is the relation between the brightness of the marking proportionally to the brightness of an ideal white surface. This light density factor (Beta) is counted in 0,...Beta. 0,50 Beta means that the marking has a brightness of 50% compared to an ideal white surface. As an international minimum standard a figure of Beta 0,30 or higher is used.

Authority
Markings, where used, shall be uniform in design, position and application so that they may be recognized and understood immediately. A uniform set of markings applicable throughout the country may, therefore, be as prescribed by the Indian Roads Congress or updated by the Ministry of Road Transport and Highways instead of Roadsurface and Transport from time to time

Our Innovational Development

Recent development from Sally Thermoplastic India Limited in formulation and application methods has given rise to Wetline. Wetline greatly improves wet night visibility.

Chief Characteristics of Sally Thermoplastic material:

Excellent long term durability

Good day and night visibility

Environmentally safe

Non toxic, solvent-free for safe handling

Exceptional heat stability

High skid resistance

Rapid drying time

Conforms to BS 3262 and MOST 803.4