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Old 26th August 2016, 13:34   #121
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Default Re: The High Beam Menace on Indian Roads

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Originally Posted by tilt View Post
Suresh, photo chromatic lenses do not work inside a car because the windshield is polarised. That completely negates the functioning of photo chromatic lenses.

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Err, No, that is incorrect, Car windscreens are not polarized. Hence photochromatic lenses do work inside a car. I use a snap on polaroid glares on top of my prescription glassed while driving and am talking from first hand experience.

See links below which explain why windscreens are not polarized:
https://www.quora.com/Automotive-Eng...elds-polarized
https://www.reddit.com/r/askscience/...owcolored_and/
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Old 27th August 2016, 09:58   #122
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Default Re: The High Beam Menace on Indian Roads

I don't think this menace is limited to Indian roads.

Why else do we have auto dimming IRVM across all manufacturers, or if not auto dimming at least the flip switch to dim the glare on the IRVM

If all roads are well lit we should be able to drive with only the parking lights. In fact this was implemented as a rule on MG Road, Bangalore a few years back. Is it still operational? Blore based BHPians can answer
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Old 27th August 2016, 13:47   #123
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Default Re: The High Beam Menace on Indian Roads

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Originally Posted by Lalvaz View Post
Err, No, that is incorrect, Car windscreens are not polarized. Hence photochromatic lenses do work inside a car. I use a snap on polaroid glares on top of my prescription glassed while driving and am talking from first hand experience.

See links below which explain why windscreens are not polarized:
https://www.quora.com/Automotive-Eng...elds-polarized
https://www.reddit.com/r/askscience/...owcolored_and/
Sorry, my mistake. It's because windshields block UV rays that photo chromatic lenses will not work inside the car. It's not because of polarisation. My mistake.

Cheers
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Old 27th August 2016, 14:45   #124
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Default Re: The High Beam Menace on Indian Roads

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Originally Posted by tilt View Post
Sorry, my mistake. It's because windshields block UV rays that photo chromatic lenses will not work inside the car. It's not because of polarisation. My mistake.

Cheers
I am using specs with crizal prescription photochromatic lens and it does work inside the car. Also have a Serengeti polarised+photochromatic sunglass which i have been using since 2010 and that also works inside the car.
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Old 30th August 2016, 00:36   #125
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Default Re: The High Beam Menace on Indian Roads

You get clip on filters that you can attach to your sun visor. It helps atleast with high beams in oncoming traffic which is more of a problem than high beams from rear or reflected off your mirrors. A quick flip of the visor and you have your visibility back
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Old 30th August 2016, 01:15   #126
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Default Re: The High Beam Menace on Indian Roads

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Originally Posted by DwarkaDelhiWala View Post
I agree that high beam is a menace.

But so are many bicycle walas, rickshaw-walas and now e-rickshaw walas (who save on battery by turning off back lights, if present at all) - all without any hint of a reflector.

Combine that with nexus of municipal corporation staff with that of power utility in switching off street lights in bye lanes of Delhi (because these are fixed charged, no electricity consumption meter).

So i have no option except to drive on high beam, even on ring road where these manual vehicles ply on large numbers, e.g., near Azadpur subji mandi.
You do have an option. Many, if not most drivers in the circumstances drive absolutely fine and safe with low beam. You need to control your speed and tactic to suit the situation. High beam serves only gives you a false sense of safety while infact endangering the life of other road users.
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Old 30th August 2016, 12:13   #127
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Default Re: The High Beam Menace on Indian Roads

@DwarkeDelhiWala; I think Delhi drivers are the worst offenders, in most matters. If you are reasonably happy that is great. What option do we have; Grin and Bear with it. No point in questioning, esp in the UP part of the NCR? Your welfare may be at risk.
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Old 30th August 2016, 12:23   #128
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Default Re: The High Beam Menace on Indian Roads

Hi,

Just to get a few things straight. Here is my understanding of lights:

1. There are two things regarding light bulbs - one is their intensity and one is their alignment. Both need to be adjusted according to the proper road conditions.

2. Leaving aside the alignment adjustments, light intensity has 2 settings - low beam and high beam.

3. Low beam is slightly angled downwards towards the road and High Beam is more stronger and is not angled downwards like low beam. I am not specifying any angle here but it is definitely not as angled downwards as low beam.

4. When High Beam is switched on, you have a blue indicator on your instrument cluster (image attached). This should be used only on highways where there is no lighting. Highway does not mean Western/Eastern highway (this is for Mumbai) as they do have some sort of lighting. So within Mumbai, always low beam should be used unless there is pitch darkness. In case another car is coming from the opposite side and is also using high beam, you should switch to low beam and hope that the opposite car reciprocates your action.

5. I have read people using the term dipper in many of their posts - just wanted to know what exactly are you referring to? I though using dipper meant flashing your lights - the thing you do when you are approaching an intersection and want to let other cars know that without using your horn.

Just wanted to check if my understanding above is correct? Please let me know if I am wrong anywhere.
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The High Beam Menace on Indian Roads-a01_high_beam_indicator.svg.png  


Last edited by Saanil : 30th August 2016 at 12:25.
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Old 10th May 2017, 00:07   #129
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Default Re: The High Beam Menace on Indian Roads

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Originally Posted by Saanil View Post
Hi,

Just to get a few things straight. Here is my understanding of lights:

5. I have read people using the term dipper in many of their posts - just wanted to know what exactly are you referring to? I though using dipper meant flashing your lights - the thing you do when you are approaching an intersection and want to let other cars know that without using your horn.

Just wanted to check if my understanding above is correct? Please let me know if I am wrong anywhere.
Chanced upon this thread and saw that nobody responded to this last, so ...
You are right in all points. For 5. The term DIPPER is used generally to mean the switch used to go to the LOW BEAM or DIPPED BEAM. The low beam is also called the dipped beam for obvious reasons, as it points downwards. So 'using the dipper' is going to the low beam from high when being approached by another vehicle. The 'dipper switch' was also used to flash your headlights by rapidly changing between HIGH and LOW before flasher switches came into being !
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