Nah, you're just pretentious :)
sour
I know how flow lights work. But they still don't help you see better that a car is turning away from you, which is what this discussion is about.
Imagine a crossroad where a car is coming from your right side. You have no way of knowing whether they turn right or go straight, regardless of the way the lights work, because you won't see them.
How would that work? On the highway, a slight nudge on a straight means you'll cross a lane, meaning turn signals on.
A kilometer later, the exact same slight nudge could mean it's just a light turn in the road, meaning signals off.
Now you could mandate cameras in all vehicles, which analyze your driving and turn on the turn signals when it thinks you're making a turn. Now who's responsible in a false positive if someone else dodges you and crashes because you suddenly turned on the signals without turning? Except it wasn't you, but your car. Oh and also you made entry level cars 10k more expensive, making them way more inaccessible if you aren't rich.
It's not that easy I think (and you had by far the best idea in this thread now).
Can't make them red or orange, they'd be just turn signals.
Can't make them green, that wouldn't work for color blind people, and since you actually need the color for understanding what signal you get (unlike traffic lights) you actually have to make it work
And arguably you can't really make them white, because you can't see a white blinking light inside a headlight and couldn't differentiate it from the back light. Same with light blue.
Which leaves darker shades of blue, which are really hard to see in daylight.
Or better yet: Ansible.
Who knows where Salt is going with Broadcom...