... minimum values for coefficient of retroreflection for seven years,5. Series 983-10, 983-32, 983-326 and 983-72 meet ... exceed all FMVSS 108 requirements, including DOT-C2 Certification Mark. Series 983-10,983-71,983-72 have the E-mark ... traffic security. 3M Reflective TAPE/3M Diamond Grade Conspicuity Markings Series 983