A bit off topic but...
I usually tend to use as much light as possible from my gauges when I am driving cac... and my face is partially green...
...Or not at all! ( lol )
It is kinda same in traffic, the brighter the traffic lights, signs, other, the better...
However, when oncoming traffic appears, I hope they have as dim as possible, due I get blinded everytime when some truck drivers keep their long beams on, forcing me to take sunglasses on... at night.