Type 9 prismatic sheeting is designated as wide observation retro reflective sheeting because it reflects a wider cone of reflectivity. This allows the film to be observed at wide angles from the light source. It has the highest retro reflectivity characteristics at short distances and is used for ground mounted highway signs, barricades, bollards, buildings, poles, fences, containers, vehicle bumpers, and more. Wide observation films are new to the market and have unique qualities that make them better for modern traffic. Brighter films, with a wider angle of visibility.
NOTE – we have spec sheets below 7900 tapes from Oralite. 7900 is a solid color sheeting and is ASTM D4956 Type 9 rated.
Type 9 film is produced by different manufacturers. The spec sheets on this page are from Oralite. Others will have similar photo-metrics.
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oralite-7900-wide-observation-angle-prismatic-technical-data-sheet 
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.