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  #37  
Old 05-01-2015, 09:20 AM
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Re: Fog lights on with High Beams?

If you have the correct software, and necessarily the starscan, there is an option called foglight dropout, you change that setting and they will not turn off with the highbeams. Or so I've heard since it's illegal and we don't talk about illegal stuff around here.

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  #38  
Old 05-01-2015, 01:10 PM
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Re: Fog lights on with High Beams?

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Originally Posted by BadTA View Post

What I don't understand is, why would fog lights with High Beams be illegal?
It's based on the idea that fog lights are meant for fog, which is means you would never want your high beams on. Using them in fog would make it harder to see due to the light reflecting back at you. Further, it spreads the light more, making it more likely to blind oncoming drivers.

So, it's not the fog lights, it's the reason for using them.

Having said that, it's an outdated law because it was made before SUVs and large trucks started becoming popular.

The reason that's an issue is with how high headlights are on those vehicles, coupled with large bumpers that shade the road for 10, 15 and sometimes 20 feet ahead if the fog lights aren't on.

This issue could be resolved, though, by simply having more cars include auto-dipping headlights that will go to low beam when it detects oncoming light, be it from another car or your own headlights reflecting back at you. That would solve the issue of visibility, yet allow you to see the road properly.
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  #39  
Old 05-01-2015, 02:16 PM
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Re: Fog lights on with High Beams?

I always figured if you are going fast enough that you need to see the distance the high beams illuminate, anything that is illuminated by your fog lights will be a hood ornament before you can react.


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  #40  
Old 05-01-2015, 02:55 PM
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Re: Fog lights on with High Beams?

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Originally Posted by bill_de View Post
I always figured if you are going fast enough that you need to see the distance the high beams illuminate, anything that is illuminated by your fog lights will be a hood ornament before you can react.


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It's not always about distance so much as the wider spread and overall illumination. Rural roads are full of animals waiting to leap out at you. The more warning, the better. With normal headlights, animals at the side of the road can end up invisible until they run out in front of you.

At the same time, some of those roads suck (especially where natural gas drilling is happening) and being able to see those potholes just ahead while you can still steer around them is valuable.

I actually avoided a broken bottle in my older car that didn't reflect anything to let me see it until my fog lights hit it. This was on a suburban street where I had my high beams on to more easily read mail box numbers to find the right address. I couldn't do that in this vehicle or my last truck.

Besides, you don't have to be going fast to quickly overrun your headlight range, even with high beams on.
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  #41  
Old 05-04-2015, 08:53 PM
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Re: Fog lights on with High Beams?

Quote:
Originally Posted by farfromovin View Post
OP- if road conditions exist for you to use high beams then your fogs don't do a damn thing. Just don't use them unless it's foggy. They aren't pencil beamed driving lamps, they're fog lights.
Wrong.

Since I swapped in HID bulbs they do provide a lot of additional light on the road (with no fog). So yes, the DO do a damn thing. If I want the additional light, I should be able to do so. It is not the fog lights (HID or not) that interfere with oncoming traffic. It is the high beams.
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  #42  
Old 03-14-2016, 09:00 PM
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Re: Fog lights on with High Beams?

I have a question about this thread, is there a relay that turns on the fog lamps??
The DRLs go through a relay so that the CanBus system can kill the DRL on the side where the turn signal is operating. The system simply de-energizes the relay on that side, thats why we can disable our DRLs by pulling the relays in the TIPM.
If so, a simple modification to the fog light relay could allow them to remain on when the high beams activate. That of course depends on them being energized through a relay.
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  #43  
Old 03-14-2016, 10:08 PM
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Re: Fog lights on with High Beams?

I do a lot of driving for a living and very rarely do I use high beams at all. I prefer to have my low beam and driving lights (aka fogs) on. Sure high beam will light up the road 2 miles away , but I would rather see what is going to jump out of the bush right in front of me. I will eventually get down the road where the high beams shine anyway.

As someone posted earlier, if you have true fog lights on with low beam, you will be able to see the road in front of you from the fogs and the road with the low beams. If the high beams were on in snow or fog the light reflects lowering your visibility. I just went through this yesterday driving through 2 short blizzards, where visibility was down to about 5 feet in front of me. If I would have hit high beams , I would have had no visibility at all from the snow reflecting the lights instead of somewhat cutting through.

Now if you are on a dark road with no light source around, then yes the high beams and fogs would give you a lot of light output, but then again you are basically seeing right in front of your bumper and 2 miles down the road , not the optimum spot along the side of the road where the critters are going to come out.

In 28 years of professional driving I have NEVER hit anything in the dark , and the biggest thing I have hit in the day was twice I hit coyotes that picked a bad time to run across the road and decide to turn around and run back then stop instead of continuing.The first went right under my tire, the second hit the bottom corner of the bumper , neither time was there any damage. The areas I cover are far ranging and I see people constantly that have hit deer or moose because they have high beams on in the dark and don't see them come out right in front of them.
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