§ 393.22 Combination of lighting devices and reflectors.
发布02-19
生效03-23
摘要总结AI 辅助解读
该条款规定了美国联邦法规第49篇中关于车辆灯具与反光器组合使用的技术标准。主要允许在符合特定安全条件（如不损害必需灯具效能）下将多个灯具或反光器进行光学组合，同时明确禁止某些高风险组合（如转向灯与大灯、未互锁的刹车灯组合等）。此内容属于具体的车辆零部件技术合规细节，非宏观贸易政策或通关流程变更，建议相关从业者按需查阅原文以确认具体车型改装或进口时的硬件合规性。
- (a) Permitted combinations. Except as provided in paragraph (b) of this section, two or more lighting devices and reflectors (whether or not required by the rules in this part) may be combined optically if—
- (1) Each required lighting device and reflector conforms to the applicable rules in this part; and
- (2) Neither the mounting nor the use of a nonrequired lighting device or reflector impairs the effectiveness of a required lighting device or reflector or causes that device or reflector to be inconsistent with the applicable rules in this part.
- (b) Prohibited combinations. (1) A turn signal lamp must not be combined optically with either a head lamp or other lighting device or combination of lighting devices that produces a greater intensity of light than the turn signal lamp.
- (2) A turn signal lamp must not be combined optically with a stop lamp unless the stop lamp function is always deactivated when the turn signal function is activated.
- (3) A clearance lamp must not be combined optically with a tail lamp or identification lamp.
[39 FR 26908, July 24, 1974]