Preformed Thermoplastic Pavement Markings have been used for highway lane delineation for many years. Currently there is no uniform national material specification for this product nor uniform agreement among specifying agencies as to what properties should be evaluated to determine material compliance. Currently the primary approach taken by specifiers is to require that Preformed Thermoplastic Pavement Markings meet the chemical and physical property requirements of the national standard for Hot Applied Thermoplastic Pavement Markings, AASHTO M249. In theory, this may seem appropriate but in practice this is not practical. In some cases the property being specified in AASHTO M249 is not applicable because of the form in which the product is manufactured and sold or the difference in the product's application method. Additionally, the test method for some properties in M249 and relevant to Preformed Thermoplastic Pavement Markings is not applicable for Preformed Thermoplastic as currently written but require some modifications in order to be used legitimately. This standard provides the user guidance as to which chemical and physical properties are relevant for testing of Preformed Thermoplastic Pavement Markings with recommendations for the appropriate test method with any needed modifications of those methods and those properties which are not relevant with the rationale for why.
The title and scope are in draft form and are under development within this ASTM Committee.