NOKIN road stud provide drivers with effective lane delineation, particularly during the hours of darkness and in adverse weather conditions The meet standards EN1463 part 1:1998 : Type P3A studs, (i.e. Permanent, Plastic reflector with abrasion resistant layer, non-depressible) and Class PRP1 Type 2 retro-reflectors and EN1463 part 2:2000 : Class S1 (Road Presence) and Class R1(Night-time