Common use of Special Specifications Clause in Contracts

Special Specifications. 7.1. Retro-reflective marking materials shall also satisfy the conditions as to shape and dimensions, and the colorimetric, photometric, physical and mechanical requirements set forth in Annexes 5 to 8 to this Regulation. 7.2. Advertising, consisting of retro-reflective logos, distinctive markings or letters/characters has to be decent. It may consist of marking materials of class "D" if the total retro-reflective area is less than 2 m2; if the total retro-reflective area is at least 2 m2 class "E" shall be used. 3/ 7.2.1. For class "D" marking materials the maximum values of the coefficient of retro-reflection are less or equal to the value defined in Annex 7, table 2, and are intended to be used in distinctive markings, graphics. 7.2.2. For class "E" marking materials the maximum values of the coefficient of retro-reflection are less or equal to 33 per cent of the values defined in Annex 7, table 2. 7.2.3. White retro-reflective marking materials intended as base or background in printing processes for fully coloured logos and markings of class "E" in use, without unprinted blank areas, may fulfil the requirements in Annex 7, table 2, for class "D" materials and must be marked as class "D/E". 7.3. Depending on the nature of retro-reflective marking material, the competent authorities may authorize laboratories to omit certain unnecessary tests, provided that such omission is mentioned under "Remarks" on the form notifying approval.