Where Does the Glare Come From?
Recommendations

The present report investigates and examines the various sources of glare in the US nighttime traffic environment. In the context of this investigation, several solutions suggest themselves to reduce the glare that currently makes driving at night in the US a driver-hostile experience,as well as to improve seeing. Here are some suggested courses of action, supported by the science and discussion in the present report.

1. Lower the allowable glare intensities for low beam head lamps, particularly at (H,V) and (0.5U,3.5L), because the currently allowable levels are too high.
2. Raise the allowable high beam intensity at (H,V)to match the European and Japanese maximum of 140,000 cd (nominal at 12.8V), because more intense high beams will increase visual performance in situations warranting high beam use, and will discourage misuse of high beams in situations warranting low beam use. (we can only hope)
3. Establish stringent requirements for colorimetric, projected-area, mounting and photometric performance of original-equipment and aftermarket auxiliary lamps, because such lamps are currently a significant and uncontrolled source of glare.
4. Lower the degree to which “white ”illumination may tend towards blue, because this will reduce the production of inherently-glaring blue light and will also reduce the motivation for individuals to attempt to attain a “blue ”appearance with halogen headlamps.
5. Require automatic aim compensators (dynamic headlamp levelling) with HID and high-flux halogen headlamps, because such headlamps create severe glare with vehicle attitude changes.
6. Raise the stringency of MVSS 101 requirements for the high beam telltale so that the words “BRIGHT”or “HIGH BEAM”appear with (or instead of) the ISO symbol, because many drivers do not notice or recognize the ISO symbol. (idiots )
7. Raise the stringency of headlamp lens marking requirements so that headlamp assemblies intended for gas discharge sources are clearly differentiated from those intended for halogen sources, because current regulations allow misinstallations to go undetected.

Here's the link to the PDF docuemnt (as if anybody cares): http://www.pergolesi.demon.co.uk/dastern/wdtgcf.pdf

 

A lot of those ideas are just plain stupid. My two recommendations for this would be to lower the angle in which the headlights are projected.

Also, I think it would be beneficial if they could put tinting windshields in. Imagine the windshield tinting upon light hitting it, just as some glasses and their lenses do.

Of course, there would be some drawbacks to filter out.

 

It would be better if the windshield were polarized and only let in wavelengths of light at a certain angle. This could be very effective. . .

 

HOLY SH*T DOES IT MATTER THAT MUCH? LIKE POSTING THIS THREAD WILL CHANGE ANYONES MINDS...

 

really. :gives:

 

:werd: :wtf:

 

:thumbdown That would decrease the range of radar detectors greatly.

 

There is a cheap way to decrease glare which I've seen nobody do yet. When painting the stock housing black paint the bottom part of the chrome reflector housing black too.

If you don't know what I'm talking about its the chrome flat part under the light bulb.

 

This is a discussion forum, isn't it? he posted it because maybe people would be interested and want to discuss it. Jeez.


Tinting windshields wouldn't help. When my rear window was tinted, the glare from lights behind me actually became like 100 times worse. I think it is party fromt he defroster lines, though.

Polarizing windshields would be an excellent idea. I would support that as long as it didn't leave my windshield looking like old lady sunglasses.

 

A lot of cops use laser instead of radar now anyway, don't they?