本SAE推荐规程适用于道路车辆（摩托车除外）。它描述了北美、日本的法规要求和行业标准以及广泛采用的UNECE（“欧洲”）法规中包含的照明和光信号装置安装要求的共性。本文件不适用于特殊用途车辆（包括但不限于警察、医疗和其他应急或公共服务车辆）的照明和光信号装置的安装。本文件不具有法律效力，也不取代申请时有效的监管要求。它可能会发生变化，以反映额外的经验、技术进步，特别是用作参考的政府和行业文件的变化。 建议本文件的用户注意其车辆销售和注册的适用法律要求。

This SAE Recommended Practice applies to road vehicles except motorcycles. It describes the commonalities of installation requirements for lighting and light signaling devices contained in the regulatory requirements and industry standards of North America, Japan, and the widely-adopted UNECE ("European") Regulations. It does not apply to installation of lighting and light signaling devices specific to special purpose vehicles, including but not limited to police, medical and other emergency or public service vehicles.This document does not carry force of law and does not replace regulatory requirements in effect at the time of application. It is subject to change to reflect additional experience, technical advances, and especially changes in government and industry documents used as references. Users of this document are advised to mind the applicable legal requirements in effect where their vehicles will be sold and registered.