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The development of automatic headlight systems at General Motors can be traced back to the early 1950s. In 1952, GM introduced the Autronic Eye, an automatic headlight dimming system, for Oldsmobile and Cadillac models. [2] Twilight Sentinel, which expanded on the concept of automatic lighting control, was introduced in the mid-1960s.
General Motors introduced the first automatic headlight dimmer called the "Autronic Eye" in 1952 on their Cadillac, Buick, and Oldsmobile models; the feature was offered in other GM vehicles starting in 1953. [148] [149] The system's phototube and associated circuitry were housed in a gunsight-like tube atop the dashboard. An amplifier module ...
Until the early 1960s, most front turn signals worldwide emitted white light and most rear turn signals emitted red light. The American auto industry voluntarily adopted amber front turn signals for most vehicles beginning in the 1963 model year, [67] [68] though the advent of amber signals was accompanied by legal stumbles in some states [69 ...
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.
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.
A daytime running lamp (DRL, also daytime running light) is an automotive lighting and bicycle lighting device on the front of a road going motor vehicle or bicycle. [1] It is automatically switched on when the vehicle's handbrake has been pulled down, when the vehicle is in gear , or when the engine is started, emitting white, yellow , or ...
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