High visibility is a key feature of 3M's engineer grade prismatic (EGP) reflective sheeting. The EGP Class RA1 reflective sheeting offers durability and performance and is designed for use on permanent road traffic signs, street nameplates, safety markings and other signage. The product is said to provide high reflectivity and colour contrast at any time of day in all weather conditions, when compared to engineer grade beaded materials. As it is efficient at retro-reflection, road signs using EGP are easier
