Originally Posted by
Helmet Head
Evidence:
http://www.cyclistview.com/laneposition.htm
Why would they expect something to be wrong if the truck did not move over if they are riding to the right of the fog line. I can't remember if you claim to use a mirror or not, but you write as if you're ignorant of what anyone who regularly uses a mirror to monitor to the rear would know: when riding to the right of a stripe, the vast majority of motorists make no adjustments in speed or position prior to passing the cyclist (see the above clip for a brief demonstration of this even without a stripe).
I *always* ride with my Take-a-Look mirror. As for your assertion about "no adjustments in speed or position"...in my experience, that is completely untrue.
If I'm riding in a "standard" bike lane, I typically ride about 18" to the right of the line. In that position, I find that most cars will shift left in the lane, and many will put their wheels over the centerline when passing me.