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LED daytime running lights on Audi A4. DRL power consumption varies widely depending on the implementation. Current production DRL systems consume from 5 [9] watts (dedicated LED system) to over 200 W (headlamps and all parking, tail, and marker lights on). International regulators, primarily in Europe, are working to balance the potential ...
LED daytime running lights on an Audi A4 (B8) Some countries permit or require vehicles to be equipped with daytime running lights (DRLs). Depending on the regulations of the country for which the vehicle is built, these may be functionally dedicated lights, or the function may be provided by the low beam or high beam headlights, the front turn ...
Audi showed the Audi Nuvolari concept car with LED headlights in 2003. [119] [120] [121] Automotive headlamp applications using light-emitting diodes (LEDs) have been undergoing development since 2004. [122] [123] In 2004, Audi released the first car with LED daytime running lights and directionals, the 2004 Audi A8 W12. [124] [125]
In order to show compliance to FMVSS 108, the lens of each original equipment and replacement headlamp, daytime running lamp (DRL) and certain conspicuity reflectors must be marked with the symbol "DOT". [1]: S6.5, S8.2.1.3, Table III This symbol may also be applied to compliant signal lighting devices, but is not mandatory.
UN Regulation 37 covers motor vehicle filament lamps. 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.
LEDs were first introduced on the Audi A8 W12, the world's first production car to have LED DRLs, [63] [64] [65] and have since spread throughout the entire model range. The LEDs are present on some Audi billboards. Since 2010, Audi has also offered the LED technology in low- and high-beam headlights. [66] The DRL in an Audi A4 B8