"So your night vision isn't getting fucked with by the head lights of oncoming cars?"
Less so than when you go throwing more photons at your eyes from inside the windshield, taking detail away from what's outside the windshield, and blocking your vision because you're trying to see shit outside your windshield through a damned reflected projection coming from inside your windshield.
"but that's probably because sodium vapor lights are efficient and reliable"
*LAAAAAUGH* Efficient in ONE COLOR with horrible color and detail reproduction.
" The move to LED street lighting is going to see a lot more blue light at night (white LED's being a blue LED with yellow phosphor)"
You're trying to talk to someone that does LEDs for a living about LEDs?
We've got new junction tech that allows a single substrate to produce all wavelengths, and is tunable in-manufacturing. Blue with a shit phosphor isn't going to be around much longer.