The technical requirements themselves are established by standards produced by DIN. Per the Fahrzeugteileverordnung (FzTV, Vehicle Parts Regulation), such light bulbs must bear an approval mark consisting of a sine wave and the letter 'K'. 18 of the Straßenverkehrs-Zulassungs-Ordnung (StVZO, Road Traffic Approval Regulation). The German regulation is contained in §22a, Subsection 1, No. Bulbs according to the old German regulation are still manufactured. There is a German national regulation for vehicle bulbs, now superseded by international ECE regulations. All light sources acceptable under Regulation 99 are also acceptable under US regulations. UN Regulation 99 covers gas discharge light sources for use in vehicle headlamps. Standard and higher-wattage versions available with halogen burner Group 3 (For replacement purposes only) CategoryĮCE nominal luminous flux: 1,750 / 1,150 lm ☑5% Similar to PS24W, but with slightly different luminous flux tolerance Old designation: C11, common name is "festoon" base Group 2 (Only for use in signalling lamps, cornering lamps, reversing lamps and rear registration plate lamps) Category Group 1 (Without general restrictions) Categoryġ2V: ECE nominal luminous flux: 1,550 lm ☑5%ġ2V: ECE nominal luminous flux: 1,450 lm ☑5%ġ2V: ECE nominal luminous flux: 1,650 / 1,000 lm ☑5%Īvailable with P45t base to upgrade old headlamps designed for R2 bulbġ2V: ECE nominal luminous flux: 1,500 lm ☑0%ĮCE nominal luminous flux: 1,700 / 1,100 lm ☑5% These are categorized in three groups: those without general restriction that can be used in any application, those acceptable only for signalling lights (not for road illumination lamps), and those no longer allowable as light sources for new type approvals but still permitted for production as replacement parts. UN Regulation 37 covers motor vehicle filament lamps. Some UN-approved bulb types are also permitted by some other regulations, such as those of the United States or of Japan, though Japan has begun supplanting the former Japanese national regulations with the international UN regulations. Which covers light sources for high-intensity discharge headlamps. These include Regulation 37, which contains specifications for filament lamps, and Regulation 99 and its addenda The World Forum for Harmonization of Vehicle Regulations (ECE Regulations) develops and maintains international-consensus UN Regulations on light sources acceptable for use in lamps on vehicles and trailers type-approved for use in countries that recognise the UN Regulations. Other automotive lighting applications such as auxiliary lamps or interior lighting may not be regulated, but common types are used by many automotive manufacturers. In Japan, the H16 is actually an H11-style bulb, with a standard H11-size base, running at a lower power level. Bulbs used for headlamps, turn signals and brake lamps may be required to comply with international and national regulations governing the types of lamps used. The primary source of confusion when upgrading stock incandescent H16 bulbs is the fact that the name 'H16' has been used for two distinct types of bulbs, in different regions of the world. Light bulbs for automobiles are made in several standardized series.
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