1.1 本试验方法描述了日光照射下荧光反光板和标记材料的色度特性（CIE三刺激值、亮度因子和色度坐标）的仪器测量。 1.2 本试验方法通常适用于具有荧光和反光特性的任何片材或标记材料，用于白天高能见度交通控制和人身安全应用。 1.3 以国际单位表示的值应视为标准值。本标准不包括其他计量单位。 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 5.1 本试验方法提供了使用45:0或0:45光学测量系统通过双光谱比色法获得荧光回射材料的三刺激值、亮度因子和色度坐标的程序。 5.2 CIE 1931（2°）标准观测器用于计算日间高能见度交通控制和人身安全应用中使用的荧光反光板和标记的色度特性，因为在实践中，这些材料主要从视野小于4°的距离观看。 5.3 本试验方法适用于任何光泽等级的物体颜色试样。 5.4 由于这些材料的回射特性，比色数据可能不适合用于计算机着色剂配方。 5.5 本试验方法适用于荧光反光板和标记材料的质量控制试验。 注1: 荧光和反射成分与总比色特性的分离提供了有用和有意义的信息，以独立评估这些材料的发光和漫反射效率以及一致性。 5.6 本试验方法是确定荧光反光板和标记材料是否符合标准日间色度规范的参考方法。

1.1 This test method describes the instrumental measurement of the colorimetric properties (CIE tristimulus values, luminance factors, and chromaticity coordinates) of fluorescent-retroreflective sheeting and marking materials when illuminated by daylight. 1.2 This test method is generally applicable to any sheeting or marking material having combined fluorescent and retroreflective properties used for daytime high visibility traffic control and personal safety applications. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This test method provides procedures for obtaining tristimulus values, luminance factors and chromaticity coordinates of fluorescent-retroreflective materials by bispectral colorimetry using a 45:0 or 0:45 optical measuring system. 5.2 The CIE 1931 (2°) standard observer is used to calculate the colorimetric properties of fluorescent-retroreflective sheeting and markings used in daytime high visibility traffic control and personal safety applications because in practice these materials are primarily viewed from a distance where they subtend less than 4° of the visual field. 5.3 This test method is applicable to object-color specimens of any gloss level. 5.4 Due to the retroreflective properties of these materials the colorimetric data may not be suitable for use in computer colorant formulation. 5.5 This test method is suitable for quality control testing of fluorescent-retroreflective sheeting and marking materials. Note 1: Separation of the fluorescence and reflectance components from the total colorimetric properties provides useful and meaningful information to evaluate independently the luminescent and diffuse reflective efficiency and consistency of these materials. 5.6 This test method is the referee method for determining the conformance of fluorescent-retroreflective sheeting and marking materials to standard daytime colorimetric specifications.