Personal test experiment, (more of an extended comment than an answer)...
Sometimes I have to drive a four door sedan at night, during times of sporadic traffic, in a town with curvy roads and hills where about half the cars on the road are SUVs, and half of those never seem to turn off their hi-beams. On a straight road the oncoming hi-beams needn't be so blinding, (one can look to the right), but on a curve with an oncoming caravan of hi-beams, (or worse, a curve on the top of a hill), looking to the right means the lights from the cars in back of the first oncoming car will still get you. Additionally SUVs are taller than sedans and have headlights at about the same level as the both the front windshield and rear window of my sedan, and their glare is more severe than if all the other cars were sedans of the same height.
Until recently I've been using the squint method to cope with the above conditions, which is to squint the left eye closed when there's oncoming traffic, using the bridge of the nose as shade to one's open right eye which accommodates itself to the glare. When the oncoming traffic ceases and the right eye has momentarily lost its night vision, (a few dangerous seconds of blindness), open the left eye, which still
has its night vision. This method works, but it's stressful, and it feels like a huge relief when the trip is over.
A few months ago, wishing to experiment, I bought a cheap $10 pair of these yellow night driving glasses at a local CVS, and have been using them while driving at night. Comparative results with glasses:
The glasses certainly don't help me see more, that is, I can't see any more detail with them than without. It's not like those before/after pictures used to sell the glasses.
The yellow shading seems quite minimal, so that at first it seems like it should have no effect. To the degree that the shading blocks light, there's not a noticeable loss of detail or light, excepting the yellow tint which one soon gets used to -- perhaps since less light gets in, one's irises dilate more to compensate.
No improvement in reducing disability glare. Oncoming headlights still make it it just about as hard to see things.
Large improvement in reducing discomfort glare. Oncoming headlights do not hurt or cause the same stress with the glasses on. It's rather like the difference between looking up at the sun, (which hurts), and looking at a photograph of the sun with some surrounding landscape -- in the photo there's still all the glare, but it doesn't hurt to look at the photo.
Immediately after the oncoming headlights are gone I can see fine with both eyes, without an adjustment period -- that is, there's none of the loss of night vision that occurs without the glasses.
So the squint method isn't necessary with the glasses, and both eyes stay open.
When the trip is done, it's a mild relief to stop, but not a huge one. The experience is very noticably less of an ordeal.
So the glasses, (or at least these glasses), don't really make it easier to see, but they do make it much less unpleasant to drive at night under the conditions given above. Whether I or other wearers of these are not obliviously driving more recklessly with the glasses on, (like confident Mr. Magoos...), seems less obvious, perhaps another answer can turn up a more general overview.