Type 2 (Super Engineer Grade) – Highway Signage, Construction Zone Devices, Graphics and Traffic Delineators
(Enclosed Lens – Glass Bead Type)
ASTM D4956 Type 2 Retro Reflective Sheeting – Medium High Intensity retro-reflective sheeting designated as “super engineer grade”. This film is double the brightness of type 1 engineer grade. Common commercial applications for this reflective film are permanent highway signage, graphics, construction zone devices, and traffic delineators. Like Type 1, Type 2 SEG is an enclosed lens glass-bead retro reflective sheeting. It is also CAD or plotter cuttable like engineering grade, only brighter. (Note – SEG is not as conformable as the flexible version of engineer grade type 1, but works fine for flat surfaces.) After cutting, edges DO NOT have to be sealed. Super engineer grade is available in all the basic colors listed below, but not in as many colors as Flexible Engineer Grade film since it is mainly used for traffic applications. SEG had a small faint STAR watermark every so often on the face of the sheeting which designates it as Type 2. Otherwise it would be difficult to tell it from a Type 1 film in daylight.
Photometrics for Type 2 Sheeting (minimum coefficient of reflection in candelas)
Observation Angle : positive .2 degrees / Entrance Angle : negative .4 degrees
- White – 150
- Yellow – 110
- Orange – 65
- Green – 30
- Red – 34
- Blue – 10
- Brown – 8
Steven Cole (Economics, MBA – University of West Florida , Business & Innovation – Stanford University) 25 years of experience in the reflective safety business. Specializing in vehicle accident and rear end collision reduction through increased visibility.