Joined: Jan 2009
Posts: 44,199
Likes: 6,435
From: New York, NY, and High Falls, NY, USA
Bikes: 1962 Rudge Sports, 1971 Raleigh Super Course, 1971 Raleigh Pro Track, 1974 Raleigh International, 1975 Viscount Fixie, 1982 McLean, 1996 Lemond (Ti), 2002 Burley Zydeco tandem
Fortunately, they are useless and not worse than useless. I don't believe drivers are distracted by images on the ground. They do not look at the ground at all, I believe, which is what makes them useless.
Next time you cycle or drive at night, ask yourself if you're looking at images on the ground, even beams of light.