See the Light (Automatic High Beam Dimmers)
March 28, 2021
It's happened to all of us. We're driving down a highway at night and over a crest appears a car with its high beams blazing. You are momentarily blinded, hoping the other driver will switch them to their low beam setting and restore your vision.
Not only do we not appreciate being blinded, face it; we don’t want to be that other driver, either. You know, the one who forgets to turn down their high beams.
Why do we want high beams in the first place? They can improve safety when used correctly, giving drivers more reaction time since they can see farther down the road. But research has found many drivers either don't use them or, when they do, they frequently forget to switch to low beams. Enter the automatic high-beam dimmer.
The quest for the perfect one began back in the 1950s, General Motors invented something it called the "Autronic Eye." It was a phototube which sat on the dashboard and turned down your beams when it saw other headlights. While touted as being the biggest advance in night driving safety in 30 years, it didn't work all that well. But as technology got more advanced, systems improved.
Today's automatic high beam dimmers usually have a camera in the rear view mirror (pointing forward). When the camera sees lights, software in the system's computer attempts to determine the source of the light, whether it is an oncoming vehicle, taillights, ambient city lights, street lights or the reflection off of a street sign. It then adjusts the headlights to operate high beams if appropriate or a less-blinding mode if they’re not.
Some automakers are striving to make their headlight systems smarter and safer by developing lamps that can avoid blinding oncoming drivers by means other than simply dimming them. One idea? Splitting the beams so they will block just the portion that shines into the eyes of oncoming drivers.
It's a long way from the Autronic Eye.
Charlie's Fast Lube Perryville
701 S. Perryville Ave
Perryville, Missouri 63775
575-517-0022
http://www.charliesfastlubeperryville.com
Need Service?
More articles from Charlie's Fast Lube Perryville
U and your U-Joints (Lubricate U-Joints)
March 22, 2026
If your vehicles power goes to the rear wheels, then you have something called U-joints in the drivetrain. U-joints are connectors that allow the rotating power from your vehicles engine to deliver its power through a driveshaft to make the rear wheels rotate. You need U-joints because the surfa... More
Don't be Fuelish (Signs Fuel Pump is Failing)
March 15, 2026
A driver of a large SUV loaded with equipment was heading on a 7-hour work trip when he stopped at a gas station to refuel. When he went to restart his SUV, it turned over but wouldn't catch. Try as he might, he was never able to get it started again. Of course there are many things that can c... More
That Squeal is Telling You Something (What Causes Squealing While Steering)
March 8, 2026
If you hear a squealing noise when you turn your vehicle, it's trying to tell you something is wrong. After all, it never made that noise before, right? The sound you hear may becoming from a few sources. Let's take a look (or a listen) to some of the possibilities. First, you almost certainl... More