Why Do We Have Fog Light In Our Vehicles ????

Nissan cdj · April 30, 2012

why we should use fog lights and when do we have to use foglights ??? i mean at which time period ????

kelum_wj · April 30, 2012

Fog lights are used to improve visibility. You can use it during bad weather and fog

Magnum · April 30, 2012

and some idiots convert their fog lamps to HID!

jdnet · May 1, 2012

On 4/30/2012 at 7:45 PM, Magnum said:

and some idiots convert their fog lamps to HID!

what's wrong with that?

Ripper · May 1, 2012

On 4/30/2012 at 7:45 PM, Magnum said:

and some idiots convert their fog lamps to HID!

care to share why?

Ripper · May 1, 2012

On 4/30/2012 at 4:30 PM, kelum_wj said:

Fog lights are used to improve visibility. You can use it during bad weather and fog

since they illuminate the road right in front of you and that too in wide beam pattern, i find it really useful to spot potholes. especially if you have to weave your way through really crappy roads. you find yourself in these situs when you venture out from beaten path into relatively untravelled territory But i personally dont run those low kelvin amber lights....a decent 4200k range gets the job done for me.

vishkid · May 1, 2012

On 5/1/2012 at 3:37 AM, Ripper said:

since they illuminate the road right in front of you and that too in wide beam pattern, i find it really useful to spot potholes. especially if you have to weave your way through really crappy roads. you find yourself in these situs when you venture out from beaten path into relatively untravelled territory But i personally dont run those low kelvin amber lights....a decent 4200k range gets the job done for me.

Yeah, I just upgraded my fog bulbs from the old amber one to a diamond white around 4400k. There is an improvement in visibility whenever I hv to use 'em.

JadeyBlitzen · May 1, 2012

basically in JDM models they are there to illuminate road markings and things that are immediately in the front corners of the vehicles in foggy conditions so the drive can stick to the right lane. however in some brand new cars like the 1st gen montero sport they really are fog lamps designed to do a better job than the headlights.

While we are on the subject of fogs I think it'd be a safer if we start fitting a bright red lamp at the back now that we got highways. in foggy or rainy situations they do a much better job making us visible to people behind us than ordinary taillights. I've seen them fitted standard on some of the newer indian cars and fully specced jdms. I've even seen some morons in maruitis driving around with these lights on in dry conditions blinding the drivers behind them.

Komisiripala · May 1, 2012

On 4/30/2012 at 7:45 PM, Magnum said:

and some idiots convert their fog lamps to HID!

Quite correct magnum. These people need to be stuck in actual fog to realise its worth. Hid's scatter in dense fog. Meaning you can't see jack-shït. Yellow light doesn't disperse like that.

I've been there, and it's not a pretty place to be when on one side is a deadly precipice and there's a truck approaching, and you can't see either!

Gyiman · May 1, 2012

On 5/1/2012 at 4:22 AM, Komisiripala said:

Quite correct magnum. These people need to be stuck in actual fog to realise its worth. Hid's scatter in dense fog. Meaning you can't see jack-shït. Yellow light doesn't disperse like that.

I've been there, and it's not a pretty place to be when on one side is a deadly precipice and there's a truck approaching, and you can't see either!

Machan, will it not depend on the colour temp, as is the case in running HID on your normal headlamps? Thought some of the newer cars came with HID Fogs?

Magnum · May 1, 2012

On 5/1/2012 at 2:37 AM, jdnet said:

what's wrong with that?

On 5/1/2012 at 3:33 AM, Ripper said:

care to share why?

Komisiripala has answered your questions

On 5/1/2012 at 4:22 AM, Komisiripala said:

Quite correct magnum. These people need to be stuck in actual fog to realise its worth. Hid's scatter in dense fog. Meaning you can't see jack-shït. Yellow light doesn't disperse like that.

I've been there, and it's not a pretty place to be when on one side is a deadly precipice and there's a truck approaching, and you can't see either!

exactly most of them dont know the value of the yellow light in a foggy condition.

varunatech · May 1, 2012

Usually fog lamps have warmer colours or selective Yellow as they call it. The point is that the human eye can interpret these colours more effectively compared to the cooler colours with blue shades. This is specially applicable in fog and snowing, where the reflections and glare from fog water droplets and falling snow irritates the drivers vision. In such a condition the lowered horizontal beam of the fog light can be used to see the road markings at the edge and center and drive your vehicle slowly. In summary fogs are not been designed to see long distance, but to see a wide part of the road and with less glare.

I do suppose HID is fine as as long as you use the correct color temperature. If someone fits a cool blue for the fog, he will be in a tough situation when he runs to real fog, mist of snow.

Usually fogs are not permitted to be used in normal driving conditions (no fog, rain..and fast driving), as the fog lights illuminate the closer by and the driver loose the focus on distance objects. Also the oncoming vehicle drivers may have glare from the reflections from the road if wet, or by surrounding.

Ripper · May 1, 2012

On 5/1/2012 at 4:34 AM, Gyiman said:

Machan, will it not depend on the colour temp, as is the case in running HID on your normal headlamps? Thought some of the newer cars came with HID Fogs?

exactly! HID is just the technology, you can get the lower kelvin ranged bulbs even for HID's so it's quite stupid to diss HID conversions on fogs just like that.

Even rally racers now almost exclusively run HID's. And those guys drive really fast even in crappy weather.

one can get 3000k HID bulbs if needed and that's the same "yellow" those specialized fog bulbs have

And about this beam scattering thing, once i was caught off guard driving upto the hills on hatton road on my truck, thick mist rolled in without warning. And all i had was my hella rallye 2000's driving lights as auxiliaries. They run 100w hella bulbs but were never designed to cut through mist. But when my normal headlights failed to cut through the mist, these babies just ripped through it illuminating a goo 100ft or more in front of the truck

I've read all these theories about how driving lights will not work in mist, how it will scatter and what not... but so far, i've experienced it the other way around.

Ripper · May 1, 2012

On 5/1/2012 at 5:40 AM, Magnum said:

Komisiripala has answered your questions

exactly most of them dont know the value of the yellow light in a foggy condition.

No he hasn't

He is assuming HID's dont offer the amber light which it actually does

So that makes your argument and his argument quite invalid!

Check up online a bit about low kelvin rated HID bulbs

varunatech · May 1, 2012

On 5/1/2012 at 4:19 AM, JadeyBlitzen said:

basically in JDM models they are there to illuminate road markings and things that are immediately in the front corners of the vehicles in foggy conditions so the drive can stick to the right lane. however in some brand new cars like the 1st gen montero sport they really are fog lamps designed to do a better job than the headlights.

While we are on the subject of fogs I think it'd be a safer if we start fitting a bright red lamp at the back now that we got highways. in foggy or rainy situations they do a much better job making us visible to people behind us than ordinary taillights. I've seen them fitted standard on some of the newer indian cars and fully specced jdms. I've even seen some morons in maruitis driving around with these lights on in dry conditions blinding the drivers behind them.

I like the following...........you are very correct, the rear fogs can prevent accidents...........it is time we Sri Lankan consider that........

While we are on the subject of fogs I think it'd be a safer if we start fitting a bright red lamp at the back now that we got highways. in foggy or rainy situations they do a much better job making us visible to people behind us than ordinary taillights

Ripper · May 1, 2012

On 5/1/2012 at 5:51 AM, varunatech said:

I like the following...........you are very correct, the rear fogs can prevent accidents...........it is time we Sri Lankan consider that........

While we are on the subject of fogs I think it'd be a safer if we start fitting a bright red lamp at the back now that we got highways. in foggy or rainy situations they do a much better job making us visible to people behind us than ordinary taillights

provided those rear lights are aimed downwards.

varunatech · May 1, 2012

On 5/1/2012 at 5:58 AM, Ripper said:

provided those rear lights are aimed downwards.

Rather.......they should have a scattering filter.......the effect should be visible from a long distance with bright red.....while not irritating with spot. brightness. Spot brightness is the bad thingy.............if aimed downward will not be visible from along distance.

Ripper · May 1, 2012

On 5/1/2012 at 6:05 AM, varunatech said:

Rather.......they should have a scattering filter.......the effect should be visible from a long distance with bright red.....while not irritating with spot. brightness. Spot brightness is the bad thingy.............if aimed downward will not be visible from along distance.

i cant remember the vehicle make but i once was stuck behind this van or suv that had high mounted break lights! ultra bright ones too and it just irritated the crap out of me.

Personally i feel even scattering light will still be a nuisssance if the lights are bright!

Also how far behind do you want the lights to be seen? Even regular tail lights can be seen quite a bit away if you're attentive.

Komisiripala · May 1, 2012

On 5/1/2012 at 5:44 AM, Ripper said:

No he hasn't

He is assuming HID's dont offer the amber light which it actually does

So that makes your argument and his argument quite invalid!

Check up online a bit about low kelvin rated HID bulbs

the question is what magnum meant by HID's. if, as i think he did, he meant high kelvin lamps, then yes, they won't work in fog. if he meant the tech, then you're quite right. low kelvin is what you need in fog. that won't depend on whether its high intensity or low intensity or no intensity.

i've seen quite a few allions converted to 8000+ kelvin HID fogs... which was my point, and yours too, ripper, i beleive.

varunatech · May 1, 2012

On 5/1/2012 at 6:29 AM, Ripper said:

i cant remember the vehicle make but i once was stuck behind this van or suv that had high mounted break lights! ultra bright ones too and it just irritated the crap out of me.

Personally i feel even scattering light will still be a nuisssance if the lights are bright!

Also how far behind do you want the lights to be seen? Even regular tail lights can be seen quite a bit away if you're attentive.

These rear fogs are never meant to be kept ON, in traffic and city driving. They should be used in highway or out of city when and only rain, fog or snowing happens. If a usual moron decide to use it in bumper to bumper traffic or city driving, he shows his level of understanding.

Usually the rear fogs are not mounted high, they are the same height as brake/parking lights. Only difference is they are relatively brighter...........making them visible from a long distance, the brightness is required when you are in fog or rain and also when in a highway and the vehicle from the back come at highway speeds.

I also noticed that some Indian vehicle advertised rear fogs. I am not sure where they are mounted, but I am sure of one thing, the owner will use it as a show off in city traffic.

Nilantha · May 1, 2012

i always on fog when drive to night

Nissan cdj · May 1, 2012

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<p>Show me wheres the fog light in this Van</p>

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Magnum · May 1, 2012

On 5/1/2012 at 5:44 AM, Ripper said:

No he hasn't

He is assuming HID's dont offer the amber light which it actually does

So that makes your argument and his argument quite invalid!

Check up online a bit about low kelvin rated HID bulbs

On 5/1/2012 at 6:33 AM, Komisiripala said:

the question is what magnum meant by HID's. if, as i think he did, he meant high kelvin lamps, then yes, they won't work in fog. if he meant the tech, then you're quite right. low kelvin is what you need in fog. that won't depend on whether its high intensity or low intensity or no intensity.

i've seen quite a few allions converted to 8000+ kelvin HID fogs... which was my point, and yours too, ripper, i beleive.

You are right, i was talking about high kelvin Hids, sorry for not being precise. and i haven't seen anyone who has installed low kelvin HIDs in SL. most of the vehicles which had a HID instead of the stock fogs had 10000K HID, which is useless in a foggy situation

Edited May 1, 2012 by Magnum

Magnum · May 1, 2012

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Edited May 1, 2012 by Magnum

vishkid · May 1, 2012

On the topic of rear fogs .. or high visibility tail lights or whatever .. how many vehicles do you see without working taillights? Mostly vans and trishaws and the lot but a lot of cars with newer registrations numbers too hv either one or both of their taillights malfunctioning and that's very irritating, not to mention dangerous. A further lot has non functioning break lights or rear signal lights which I personally find very frustrating (they are thinking they hv signalled their intention but the driver behind will know jack).

It's no use to hv complicated light setups and spend millions in your axios and insights if the lights are not working and you're not bothered to check ALL the lights once in a while.