Editing Headlamp (section)

== Automatic headlamps ==
Automatic systems for activating the headlamps have been available since the mid-1950s, originally only on luxury American models such as Cadillac's [[Twilight Sentinel]], Lincoln, and Imperial.<ref>{{cite web |url=https://www.hagerty.com/media/archived/photonic-technology/ |title=Photonic technology of tomorrow for automatic driving today |last=Bumbeck |first=Mike |date=21 June 2016 |publisher=Hagerty}}</ref> Basic implementations turn the headlights on at dusk and off at dawn. Modern implementations use sensors to detect the amount of exterior light. UN R48 has mandated the installation of automatic headlamps since 30 July 2016. With a daytime running lamp equipped and operated, the dipped beam headlamp should automatically turn on if the car is driving in less than 1,000 lux ambient conditions such as in a tunnel and in dark environments. While in such situations, a daytime running lamp would make glare more evident to the upcoming vehicle driver, which in turn would influence the upcoming vehicle driver's eyesight, such that, by automatically switching the daytime running lamp to the dipped-beam headlamp, the inherent safety defect could be solved and safety benefit ensured.