> When the lighting conditions are dark enough and there are no cars ahead, the highbeams will come on automatically. Should a car approach or when high beams are not needed anymore, they will revert back to low-beam.
I remember that option being advertised in the 1950's on Cadillacs or some other luxury car. Back then I believe it was a big thing with a lense mounted on the top of the fender.
P.S. I just did a web search and it appears auto dimming was introduced even earlier than I thought:
"1939 Oldsmobile offers automatic headlight dimmer switch"
|