On 2009-02-20, Mark Brader wrote:

The last thing to be mentioned is that this system offers one
significant advantage over the one used in Europe and on some
American cars, where all turn signals are yellow. When it's dark
and you see a turn signal flashing some distance ahead of you,
if the rear-facing turn signals are red, then you know immediately
whether this one is on a car facing toward you or not.

You can't tell this by the big white headlights versus the small red
rear lights?