Dazzlingly bright on-coming head lights.

[hunter]

5. I miss the days when only two sorts of headlights were legal.

Most cars had a single pair of round headlights that did high/low beam in one package, and upscale cars had four round headlights, the additional pair being the high beams.

Now it seems anything goes. The blue-white searchlights are the worst, they ruin the night vision of oncoming drivers, even on low beam.