California Code of Regulations
Title 13 - Motor Vehicles
Division 2 - Department of the California Highway Patrol
Chapter 2 - Lighting Equipment
Article 3 - Construction Requirements
Section 648 - Housing for Optical Units
Current through Register 2024 Notice Reg. No. 38, September 20, 2024
Housing for sealed and semisealed optical units shall have mounting surfaces and retaining rings meeting the following requirements:
(a) Seating Areas. Seating areas on mounting rings or their equivalent shall be free of any burrs or projections that might cause unit breakage or improper seating for a distance of at least 32 mm (1.25 in.) on each side of the center of the locating notch.
(b) Retaining rings or similar devices for holding a unit in a housing shall provide rigid retention of a unit of minimum design flange thickness.
Note: Authority cited: Section 26103, Vehicle Code. Reference: Sections 24012 and 26103, Vehicle Code.