Well, slowing down won't help much in terms of not getting blinded, but it will help you avoid things that are hard to see in the glare, as it gives you more reaction time. Looking away is the thing that protect you against getting (badly) blinded.
slow down and avoid looking directly into the lights of the approaching vehicle
To avoid beiTo avoid being blinded by an approaching vehicle at night, it is best tong blinded by an approaching vehicle at night, it is best to
Look at the white line and keep some light on in front , so that blinding effect be minimized.
Although the lights should be dipped when approaching another vehicle so they aren't bright, the best place to look would be at the edge of the road on your side; you will still be able to see most of what is on the road ahead of you, but without looking directly at the bright lights.
keep your eyes focused on the right side of the road avoid looking into the oncoming headlights
Yes, especially that.
A vehicle approaching from the opposite direction.
300 feet
Slow down, and look more to the nearside (verge) to avoid your night vision being damaged. You should not be tempted to put your lights on full in retaliation. But a quick flash will often get the other driver to dip.
approaching an incline
Run?
If you are driving with your bright lights on and can see an approaching vehicle, you should turn off your bright lights immediately.