Thermoplastic is considered a longlife material that liquefies when heated to approximately 400-450 degrees and then applied to the pavement by either an extrusion or spray method, creating a good solid bond to the surface when cooled. It has been used as a pavement marking material in the United States since the late 1950’s. It can be applied by truck mounted applicators or by hand liners. The hand liners are used for the installation of symbols, legends, and stop bars. Longline applications on roadways are done by truck. Thermoplastic pavement markings usually last from 2-3 years, depending on traffic volumes.