folowing a 4 wheelers driving is really helpful, but from a safe distance.like 200 meters or more.
i have seen this, specially with me, when i m following any 4 wheeler at night, i get good help about the road ahead, but when u go too close, even below 200 meters u tend to get fall in target fixation.
especially those brake lights put u in some sort of hypnotism..so try to avoid looking at the vehicle ahead for longer times.
just keep ur eye rolling..
from road, to the vehicle to ur bike and then to the road!