[Borborygymus]

I through it would be a nice idea to have lights polarised vertically and screens polarized horizontally... scattered light gets de-polarized so object illuminated by the lights would still be visible through screen, but direct light from other people's headlights would get blocked.

Don't know how that would look practically (how bright can one really make a polaralized light source that is cost-effective / how expensive is it to create whole windscreens that are polarized / getting it rolled out would be a challenge).

Still it's a very anoying problem and it would be nice to find a decent solution.

[potamic]

The main problem with this is that a polarizing filter blocks overall light by about a half, so wouldn't be usable in the dark.