I'm going with the latter. I know that many cars with daytime running lights distract me and make the car itself harder to see. At the same time, I've wondered if that's because I'm more sensitive to light, possibly based on the fact that I have light-colored eyes. I also wonder if it has to do with the fact that to become apparent in the bright North Carolina sun, DRLs have to be quite bright to be seen at all.

Most of the statistics that promote them seem to be based on some flawed methodologies, like assuming the light level in Finland is like the light level in most of the US, or that a small percentage of cars on the road with DRLs will be similar to having a large percentage of cars with DRLs.

Anyway, what do the rest of you think?