... values for coefficient of retroreflection for seven years,5. Series 983-10, 983-32, 983-326 and 983-72 ... all FMVSS 108 requirements, including DOT-C2 Certification Mark. Series 983-10,983-71,983-72 have the E- ... and rear perimeter rigid sided trucks and trailers for enhanced visibility and detection. For example used for truck and ... . 3M Reflective TAPE/3M Diamond Grade Conspicuity Markings Series 983