[viagraman]

i assume he also had his (tail) lights on and probably brake lights if he was stationary.
So the other driver should have seen his lights.

If he was already stationary it would just be tail lights on unless he was using the foot brake. They are a lot duller than headlights but you're right, they should have been seen. LL was querying why a driver couldn't see him by headlights when he could see them in his rear-view and I was trying to explain how that could happen.