I mean, I have those types of lights on my car, but I am VIGILANT about checking that they have a slight DOWNWARDS slope (and I'm in a relatively low sedan to begin with). There's a T-intersection near my house with a retaining wall at the end - very convenient for checking the angle.

Even when I upgraded my old car to HIDs (because I could barely see anything over the other cars), I checked over and over to make sure I was low enough. Also, I ensure I never light up the TOP crease of the trunk of any sedan behind me. If I light up anything inside another car, it's bad.