1.1本试验方法包括通过可在现场使用的便携式反光计，在规定几何形状下测量凸起反光路面标记的反光特性。可以将测量值与最低要求进行比较，以确定是否需要更换。 1.2本试验方法中规定的逆反射计观察角度为美国当前规定的凸起路面标记的观察角度，可能与其他地方使用的角度不同。对于其他司法管辖区，用相关机构规定的观察角度替换本文规定的观察角度。 1.3本试验方法旨在用于现场测量凸起的反光路面标记，但也可用于在现场放置新标记之前测量其性能。 1.4以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.5 本标准无意解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。

1.1 This test method covers the measurement of the retroreflective properties of raised retroreflective pavement markers at a prescribed geometry, by means of a portable retroreflectometer that can be used in the field. The measurements can be compared to minimum requirements to determine the need for replacement. 1.2 The observation angle specified for retroreflectometers in this test method is that currently specified for raised pavement markers in the United States and may differ from the angles used elsewhere. For other jurisdictions, replace the observations angle specified herein with the observation angle specified by the pertinent agency. 1.3 This test method is intended to be used for field measurement of raised retroreflective pavement markers but may also be used to measure the performance of new markers before they are placed in the field. 1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.5 The 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 and health practices and determine the applicability of regulatory limitations prior to use.