本SAE推荐实践适用于使用发光二极管（LED）作为光源的机动车信号和标记照明设备的功能。本报告提供了适用于LED照明设备特殊特性的测试方法、要求和指南。此推荐实践是对设计有白炽灯源的设备所要求的实践的补充。本报告旨在作为标准实践的指南，可能会发生变化以反映额外的经验和技术进步。

This SAE Recommended Practice applies to functions of motor vehicle signaling and marking lighting devices which use light emitting diodes (LEDs) as light sources. This report provides test methods, requirements, and guidelines applicable to the special characteristics of LED lighting devices. This Recommended Practice is in addition to those required for devices designed with incandescent light sources. This report is intended to be a guide to standard practice and is subject to change to reflect additional experience and technical advances.