whiteout condition

I had same situation as you but I was on highway. It is so scared and I could not turn on highlight light due to reflection. I drove heavy rain, foggy and snow weather condition, but remember this is different!!! You can not see anything and don't know where you drive!!!
I saw several cars down to side of the road. I finally found a spot to park the car at side of highway with emergency light on. (Literally I don't know if that is on highway or at the side of highway. Just wider than other place. ) After that, there were about 7 cars after my car and everyone turned on emergency light.
We waited for 20 minutes and then at least we can see the road. I started to drive. The emergency light was turned on all the way and nobody cared which line you should drive because you can not see it!!! 40 minutes road I drove for about 2.5 hours!

This is WHITEOUT condition and I was the first time to understand this word. Never drive if you see this word under weather condition!!!!