[venkyhere]

Originally Posted by tsk1979

Don't you think if yellow and red penetrated more, fog color would be blue just like the sky which is blue due to Rayleigh scattering

It would, if the light emitted from the headlamp has the intensity and neat wavelengths of sunlight. Even if it did, the blue color fog would be observed by a guy standing nearly perpendicular to the car, not by you inside the car or a guy standing straight ahead of the car. Same goes for why stop and caution lights are red and amber - they are the best wavelengths within human vision range, that can remain atleast somewhat aligned to the original direction of light throw from lamp, when observed from a distance through fog.

[abhi7013]

Originally Posted by tsk1979

?? Very strange! i have looked for the blue fog, but cannot find it
due to Rayleigh scattering

Totally unrelated phenomenon to what we are discussing. The sun's light is pure white which is a combination of all colours. Basic school stuff. So unless you have a mini nuclear fusion thingy going on in your headlamps that produces pure white light energy (and vaporizes everything else around it!), your search for blue fog would be fruitless!

[tsk1979]

Originally Posted by abhi7013

Totally unrelated phenomenon to what we are discussing. The sun's light is pure white which is a combination of all colours. Basic school stuff. So unless you have a mini nuclear fusion thingy going on in your headlamps that produces pure white light energy (and vaporizes everything else around it!), your search for blue fog would be fruitless!

Well what about daytime fog. Shouldn't that be blue then?
And what about clouds, why are they white and not blue

but lets say you want to believe that yellow or red penetrate fog better. For that to happen, the droplet size in clouds and fog should be of similar wavelength as blue light for blue to scatter and yellow/red to not

So google wavelenth of light, and size of water droplet particles and then check

Originally Posted by venkyhere

It would, if the light emitted from the headlamp has the intensity and neat wavelengths of sunlight. Even if it did, the blue color fog would be observed by a guy standing nearly perpendicular to the car, not by you inside the car or a guy standing straight ahead of the car. Same goes for why stop and caution lights are red and amber - they are the best wavelengths within human vision range, that can remain atleast somewhat aligned to the original direction of light throw from lamp, when observed from a distance through fog.

you are talking two different things. One is human sensitivity to light, which is highest in the green-yellow range. so yes blue light will illuminate the roads less as far as human eye is concerned. That is why 7000k headlamps are useless

Second question is does yellow light scatter less? Well it does not. Fog water droplets are too large for wavelength of visible light to have a meaningful effect

Lastly, coming to "Red". Red light preserves night vision. If stop lights were white, your night vision would die.

[Alisiddiqui]

Folks. Need help. Bought an Innova Crysta GX recently with halogen headlamps separate for high and low beam. I'm not satisfied with the light at low beam and it always feels inadequate. GX doesnt come with projector lamps. Pls advise best option to bring more light to the low beam without compromising on original assembly, hazard to oncoming traffic, fear of reflectors getting burned out, warranty issues, etc.

[Mr. Nobody]

Originally Posted by Alisiddiqui

Folks. Need help. Bought an Innova Crysta GX recently with halogen headlamps separate for high and low beam. I'm not satisfied with the light at low beam and it always feels inadequate. GX doesnt come with projector lamps. Pls advise best option to bring more light to the low beam without compromising on original assembly, hazard to oncoming traffic, fear of reflectors getting burned out, warranty issues, etc.

Install a pair of good bi xenon HID projectors, both your high beam will be increased and low beam will get great too without causing glare to others.

[Johnn]

Originally Posted by Alisiddiqui

Folks. Need help. Bought an Innova Crysta GX recently with halogen headlamps separate for high and low beam. I'm not satisfied with the light at low beam and it always feels inadequate. GX doesnt come with projector lamps. Pls advise best option to bring more light to the low beam without compromising on original assembly, hazard to oncoming traffic, fear of reflectors getting burned out, warranty issues, etc.

See my post with pics on on Philips LED. They have newer models too. No heating or wiring issues only quite expensive at 8k. Crisp lighting edges on older model but bit diffused in latest reflectors. Request all to avoid high beams and horns.

[sgiitk]

A shade OT. I replaced the fog in my Civic with 3000K HIDs. Brilliant. I may add that 2700K may have been better

[seb11]

Hello Everyone. I am new to the forum, however do read up and follow the thread and articles put up since quite some time.
I have a question.. I have a Polo 2016 model and it has been 4 years since the purchase. Primarily the car was used by me for driving in the city. Though I felt the headlights were inadequate even then it was still manageable. Even since a few months I have been doing highway drive of 180 kms in the night to get back home from work during the weekends.
My question is:
What headlights are the best in terms of performance?
HID/LEDs or HID/halogen or HID/LEDs combinations for night driving on the highway.

The car probably will be with me for another two years so wouldn’t want to spend too much on the headlights.

[a4anurag]

Originally Posted by seb11

I have a Polo 2016 model and it has been 4 years since the purchase.

What headlights are the best in terms of performance?
HID/LEDs or HID/halogen or HID/LEDs combinations for night driving on the highway.

I presume the Polo you have is equipped with dual-barrel headlights so, I'll suggest you get HID projectors fixed in the low beam barrel and leave the halogen high beams as is. Get a 35W HID ballast + 5500K D2S bulb with a relay harness. You can look at Morimoto projector retrofit kits for the same.

Do NOT upgrade/switch to LED bulbs in a halogen reflector equipped one, lighting spread will be bad.

[seb11]

Originally Posted by a4anurag

I presume the Polo you have is equipped with dual-barrel headlights so, I'll suggest you get HID projectors fixed in the low beam barrel and leave the halogen high beams as is. Get a 35W HID ballast + 5500K D2S bulb with a relay harness. You can look at Morimoto projector retrofit kits for the same.

Do NOT upgrade/switch to LED bulbs in a halogen reflector equipped one, lighting spread will be bad.

Thanks. However with the onset of monsoon will the HID be a good bet? Since everyone was saying that the HIDs don’t do well during the rains.

[a4anurag]

Originally Posted by seb11

Thanks. However with the onset of monsoon will the HID be a good bet? Since everyone was saying that the HIDs don’t do well during the rains.

You can look at 4500k range bulbs which won't be much of an issue in rainy season.

I am currently running on D2S 4.0 kit with 5500k bulbs in 50W ballast. Waiting for delivery of the 4800k bulbs.

[seb11]

Originally Posted by a4anurag

You can look at 4500k range bulbs which won't be much of an issue in rainy season.

I am currently running on D2S 4.0 kit with 5500k bulbs in 50W ballast. Waiting for delivery of the 4800k bulbs.

Thank you.
What kind of cost (approx) am I looking at?

[a4anurag]

Originally Posted by seb11

Thank you.
What kind of cost (approx) am I looking at?

Roughly between ₹24,000 - ₹26,000. These projector kits are universal that can be removed from the car and fit into the next one you buy. Check my thread for all the other details - Link to thread.

It shall be a easy MOD in your case and should be done in a day mostly.

[seb11]

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[IQBAL VEERJI]

Originally Posted by PrideRed

As most HID's/LED's are 4300K and above, Halogen should perform better in real world? Take my case, I have an Innova Crusta with Quad beam Halogens and are fantastic. Only thing I don't like is they are yellow! If I am to upgrade, should I consider a better Halogen or LED's? There are plenty of halogen options available which offer improvement from 60-150%.

At any given time our faithful, primitive, long lasting halogen lamps are the best.
Although they consume lot of power from battery, which can be seen and observed if a amp meter is fixed,.
Now the cost,, they are quite economical as compared to rest of the lot.
And the BEST part is they are MADE IN INDIA.