If you find yourself walking on the road at night, what would you do to keep yourself safe?

Myself I would walk facing traffic, and if at all possible carry a flashlight so traffic could see me.
Last night on the way back on my run, there were two people walking on the side of the road, with traffic instead of against, very dark clothes, no flashlight, and right on the fog line, I didn’t see these two until I was right on them, I missed them by inches.
The dirt and wind I must have made for them would have been most unpleasant, but I could just make them out in my mirrors and could tell they were alright.
This was highway 1, not some country back road, a major truck rout, think these two were idiots or am I just over reacting?