Section 647 - Plastic MaterialsPlastic materials shall meet the following requirements:
(a) Optical Parts. Plastic materials for optical parts of devices shall comply with SAE J576d, June 1976. Samples shall be tested either in the thickness specified in SAE J576d or in the minimum, maximum, and one intermediate thickness of the material as specified by the materials manufacturer.(b) Dark Filters. Transparent material used for darkening the unlighted appearance of lamps shall meet the luminous transmittance and trichromatic coefficient requirements before and after the outdoor exposure test when used in conjunction with a colored filter that in combination meets the color requirements of SAE J578d, September 1978, before the exposure test.(c) Substitution of Materials. When one of several distinctive types of plastic materials, such as polymethyl methacrylate, is acceptable under one manufacturer's designation, another material of the same type may be substituted under a different manufacturer's designation without a retest of the device in which it is used. Plastic materials of different types, such as butyrate and polymethyl methacrylate, shall not be substituted for one another unless the device containing such substitution is retested to meet the warpage and photometric test requirements.Cal. Code Regs. Tit. 13, § 647
Note: Authority cited: Section 26103, Vehicle Code. Reference: Sections 24012 and 26103, Vehicle Code.