1.1 在本指南中，用户将了解哪些预成型热塑性路面标线的化学和物理性能适合在实验室进行评估，以确定其质量和与用于进行这些评估的适当取样、样品制备和测试方法的一致性。 1.2 在本指南中，用户将了解哪些已安装、在用的预成型热塑性路面标线的性能适合使用相关的测试方法和取样协议进行评估。 1.3 以英寸-磅单位表示的值应被视为标准值。括号中给出的值是对国际单位制的数学转换，仅供参考，不被视为标准值。 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。 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》中确立的国际公认的标准化原则制定的。 =====意义和用途====== 5.1 本指南提供了指导，说明在评估预制热塑性路面标记材料的质量和一致性时，建议考虑哪些成分和物理性能，以及适当的取样、样品制备和测试方法。这有助于协助制造商进行产品研发工作，政府机构制定合适的质量保证取样和测试计划，以及政府机构制定预制热塑性路面标记材料的合适材料规范。 5.2 本指南提供了如何评估道路上预成型热塑性路面标线的现场性能特性的指导，这些标线有助于驾驶公众的安全。政府机构可以使用本指南来评估这些标记在现场的性能，并帮助确定何时需要更换这些标记。它也有助于制定预制热塑性路面标线的现场性能规范。 5.3 In 附录X2 ，已发现不合适的性能和相关测试方法，因此不应将其指定或评估为预成型热塑性路面标记材料的性能，并解释原因。 注1: 在路面标线领域，预成型热塑性路面标线材料的成分与热塑性材料相似- 应用热塑性路面标记材料；然而，由于交付给客户的产品形式不同，需要不同的测试协议。预成型的热塑性路面标记材料通常与表面应用的光学元件/滑橇颗粒一起提供给用户，这使得产品在成分上代表了已完成、已安装的路面标记。另一方面，向用户提供的热应用热塑性路面标记材料没有表面应用的光学元件/滑橇颗粒，因此，在成分上不能代表已完成、已安装的路面标记，包括在安装时应用于路面标记表面的回射光学元件/滑动颗粒。预成型热塑性路面标记材料与热成型路面标记材料交付形式的差异- 所应用的热塑性路面标记材料使得在实验室中测试某些物理性能变得无关紧要，或者需要对标准测试程序进行一些修改才能变得相关。

1.1 In this guide, the user is informed which chemical and physical properties of preformed thermoplastic pavement markings are appropriate to be evaluated in the laboratory for determining quality and consistency with the appropriate sampling, sample preparation, and test methods to be used to make these evaluations. 1.2 In this guide, the user is informed which properties of installed, in-service preformed thermoplastic pavement markings are appropriate to evaluate with relevant test methods and sampling protocols. 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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 In this guide, guidance is provided as to which compositional and physical properties, with appropriate sampling, sample preparation, and test methods, are recommended for consideration when evaluating the quality and consistency of preformed thermoplastic pavement marking materials. This is useful to assist manufacturers in their product research and development work, governmental agencies in the development of a suitable quality assurance sampling and testing program, and governmental agencies in the development of a suitable material specification for preformed thermoplastic pavement marking materials. 5.2 In this guide, guidance is provided on how to evaluate the field performance properties of preformed thermoplastic pavement markings on the roadway that contribute to the safety of the driving public. Governmental agencies can use this guide to evaluate the performance of these markings in the field and help determine when these markings need to be replaced. It can also be helpful in the development of field performance specifications for preformed thermoplastic pavement markings. 5.3 In Appendix X2 , the properties and related test methods that have been found to be inappropriate and, therefore, should not be specified or evaluated as a property of preformed thermoplastic pavement marking material with an explanation as to why. Note 1: Within the realm of pavement markings, preformed thermoplastic pavement marking materials are compositionally similar to hot-applied thermoplastic pavement marking materials; however, because of the difference in the form of the product as delivered to the customer, a different testing protocol is required. Preformed thermoplastic pavement marking material is typically provided to the user with surface applied optics/skid particles, which makes the product compositionally representative of the finished, installed pavement marking. On the other hand, hot-applied thermoplastic pavement marking material is provided to the user without the surface applied optics/skid particles and, therefore, is not compositionally representative of the finished, installed pavement marking, which includes retroreflective optics/skid particles applied to the surface of the pavement marking at the time of installation. The difference in the delivered form of preformed thermoplastic pavement marking material as compared to hot-applied thermoplastic pavement marking material makes the testing of some physical properties in the laboratory irrelevant or requires some modifications to the standard testing procedure to become relevant.