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The following is a list of vehicles that feature hidden headlamps (also called pop-up headlights). [1] The vast majority of hidden headlamps are on cars , however, there are a handful of vehicles included in the list that do not fit this category.
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. Other automotive lighting applications such as auxiliary lamps or interior lighting may not be regulated, but common types are used by many automotive manufacturers.
A relatively large variety of cars incorporated hidden headlamps in the 1970s, 1980s, 1990s, and up to the early 2000s. Subsequent legislation led to hidden headlamps falling increasingly out of favor. In the past, manufacturers often used hidden headlamps to circumvent headlight height regulations in the United States.
High-intensity discharge, or HID lights, sometimes referred to as "xenon lights", are modified metal halide lights employing xenon fill gas. Traditional HID lights, such as those used for general lighting, have a long warm-up time. Headlights must provide light very shortly after they are turned on, and the xenon gas serves to reduce warm-up ...
HID lamps are used in high-performance bicycle headlamps, as well as flashlights and other portable lights, because they produce a great amount of light per unit of power. As the HID lights use less than half the power of an equivalent tungsten-halogen light, a significantly smaller and lighter-weight power supply can be used.
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]