Summary
This regulation mandates that manufacturers submit detailed technical specifications for vehicle headlight bulbs and sealed beam units to NHTSA, including filament dimensions, base geometry, electrical characteristics, and performance metrics. It requires submission 60 days before manufacture, creates a public docket (Docket No. NHTSA 98-3397), and establishes that the agency will reject submissions if they indicate a new light source is interchangeable with a previously filed one. The stated purpose is to ensure replacement light sources are interchangeable with original equipment and provide equivalent performance, while preventing accidental interchangeability between distinct designs.
Reason
This regulation imposes significant compliance costs on manufacturers, especially small firms, requiring detailed engineering submissions for mundane product specifications. It creates a bureaucratic barrier to innovation by freezing designs through government approval and extends federal regulatory reach into technical details that properly belong to private sector coordination. The goals of interchangeability and performance can be achieved through FMVSS 108's performance standards, product liability law, market forces, and private industry standards bodies (SAE, ANSI). Government maintenance of a specifications database represents unconstitutional federal overreach, invites regulatory capture by incumbents, and adds a hidden compliance tax with no commensurate public safety benefit.