When the weather is nice, you may turn on the fog lights because you feel the lights are not bright enough and want to increase the brightness, or you may have accidentally turned them on and don't know how to turn them off.
But no matter what, when the weather is good, it is still recommended that you do not turn on the fog lights, because the fog lights are dazzling and pose a safety hazard.
Why do some people turn on their fog lights when the weather is nice?
- Some people think it is brighter and safer to leave fog lights on at ordinary times.
In some cases, fog lights can indeed be used as auxiliary lighting. Some models use front fog lights as steering auxiliary lights.
When turning, when you turn to the left, the fog light on the left will come on, illuminating your blind spot.
For example: the Volkswagen Sagitar has the steering auxiliary light and front fog light integrated together.
But if you want to use fog lights to illuminate the road ahead, it is a bit difficult.
I read about 20 papers and found some data. I referred to the paper published by Tang Xiaolei and Yang Tong in the journal "Quality and Standardization", "Research on the Performance Comparison of Automobile B-Class Front Fog Lamps and F3-Class Front Fog Lamps."
As mentioned above: the longest distance at which the LED front fog lamp illumination reaches 5lx (lux) is about 29m.
For comparison, data from the IIHS (Insurance Institute for Highway Safety): For a 2018 Audi Q5 with a certain configuration, the longest distance at which the LED low beam illumination reaches 5lx is 67.7m, and the evaluation score is "P", which is "Poor" ".
What's the meaning? That is: relatively poor LED lights are almost substandard low-beam lights, and the lighting effect is more than twice as good as this LED fog light.
- Some people open it accidentally and don’t know where to close it
Another situation is: I don’t even know where my fog lights are on. "What? Will there be fog lights on my car?"
Some models do not have front fog lights, such as the low-end Cruze. However, according to national standards, rear fog lights are required for every car in the country.
Let’s take a look at what the fog light logo looks like. Take a look at the picture.
The green one facing left is the front fog light; the yellow one facing right is the rear fog light. When the weather is nice, you can pay attention to whether these two lights on the dashboard are on.
I want to turn off the fog lights. Where is the switch?
The first is more common: on the lever behind the steering wheel, you first turn the outermost circle to turn on the car's lights, and then turn the inner circle to adjust the fog lights.
The other one is: above our left knee, if there is a button, some can be opened by pressing it directly; some can only be opened by turning on the wide light or headlight first, which varies with different models.
There are also some special ones, such as Volkswagen cars, which use a rotary switch. You must first turn to the headlight block, and then pull the knob out to turn on the fog lights.
It's just like the knob on the side of a watch. You have to pull it out to adjust the time. If you want to turn it off, just push it back.
How disgusting is it to turn on fog lights in normal weather?
- The rear fog light is brighter than the brake light
Front fog lights and high beam lights are almost dazzling, and everyone can feel it, right? So how bright is the rear fog light?
In fact, it is not much different from installing a high beam on the butt of the car.
Refer to GB 11554-2008 "Light Distribution Performance of Rear Fog Lamps for Motor Vehicles and Trailers".
The maximum limit of the luminous intensity of the fixed intensity rear fog lamp is 300cd (candela), and the maximum limit of the variable intensity rear fog lamp is 840cd (candela).
Refer to GB 5920-2019 "Light distribution performance of front lights, rear lights, position lights and brake lights of automobiles and trailers".
The maximum limit of the luminous intensity of the brake lights with stable light intensity is 260cd (candela), and the maximum limit of the luminous intensity of the brake lights with variable light intensity is 730cd (candela).
Don't forget to put it in simple terms: some rear fog lights can be brighter than the brightest brake lights on the road.
How does it feel specifically? Just when you are waiting at the traffic light, there is an Audi in front of you, and the brake light is red, bright red, shining in your eyes: "Wow". "It's probably a little brighter than that.
- What should you do if you encounter someone with fog lights on on the road?
So if someone really accidentally bumps into it and turns on the rear fog light, we can use the high beam to flash him twice.
If the car in front does not close, we will overtake. Don't suffer this penalty, and we can also take a look at the car to see if there is a beautiful woman sitting in it. Pay attention to safety.
If you are kind-hearted and it does not affect safety if you pass, you can remind him: "You can go and lock him up."
If the front fog lights are not turned off, then it is the same as dealing with high beams: reflective strips and bright flashlights.
We previously wrote about "How to Scientifically Counter Kill High-beam Dogs?" "It's mentioned in the video, so I won't go into details here. Friends who are interested can also take a look.
If the car owner really doesn't know what he is doing or whether he is driving it, this method is probably useless.
We can only share our current video with him, let him see it, and then turn off the fog lights.
Turning on fog lights on sunny days will affect the vision of other drivers.
To sum up, it is right to turn on fog lights in rainy and foggy weather. Driving them on sunny days is extremely glaring. Not only does it not help with lighting, it will also affect the driving vision of other drivers.
When the rear fog light is turned on over there, it is actually the reverse high beam that is shining on others, and it is also very bright.
Therefore, fog lights are used on rainy and foggy days when visibility is unclear. Their name is "fog lights". They are only used when there is fog. There is no need to turn them on at other times.
When driving on the highway at night, should you turn on your high-beam headlights?
We do need to turn on the fog lights on rainy days, and friends often leave messages in the background asking me: "Do I need to turn on the double flashes?"
What I often see is this: On the highway, "Wow~" It's raining heavily, and when the water mist rises, a long strip, like hairtails, all double-flash, row by row on the other side, Is this right?
My first reaction was: I didn’t know whether the car in front of me was going to turn left or right, but everyone seemed to be driving that way. Right? Are there any regulations? Are there any requirements?
On the road, apart from the pain of encountering the car in front of us who turned on his fog lights randomly, the most painful thing was that he turned on his high beam all the way until we were blinded.
How to fight back scientifically? In other words, how can I minimize the impact on myself and be able to drive safely?
I have prepared videos for you with these techniques, papers, materials, and cases.
- Keywords: car lights
If you want to know these, it is very simple. Just follow "Spare Tire Talking Cars" and reply to the keyword "Car Lights". "Spare Tire Talking Cars" is waiting for you to play.
