Except those same laws restrict maximum brightness. I've tried some German lights, and though the beam pattern is nice, they're not bright enough for my rides. For the few days I used them before returning them, I had to ride the brakes all the way down the hills with rough road that are on my route. With cheap eBay lights (600 or so lumens) I can bomb them full speed.

I use a circular pattern light, but it's very spotty, then fix a beam widening lens on it. The result is a moderate cutoff when I aim it properly, and a ton of light on the road.

I live in a rural area so I know people I see driving on the road, and I've asked a few of them later if my light bothered them, and nobody was bothered.