> BM>car.  How, in a case like this, can I make the would-be good Samaritan
  >understand, even before he gets out of his car, if possible, that I want
  >privacy, not help?
 > I can understand your problem; but short of a big
 > "Cholera" sign 
 > I don't know how you can keep people away.  Even a
 > sign that you are
 > taking a nature call would attract curious people.
So true, and not helpful curious people.
 > Good luck.
 > On the other hand, maybe a "Drug Checkpoint" sign
 > would work. 
Heheh.  If it didn't get me in trouble with the law, first.
I asked, because I know truckers use signals to indicate various things, such 
as, "You've passed me and gone far enough ahead of me that it's OK for you to 
move back into the right hand lane, now."  I thought maybe there was some 
convention used by people on the move to indicate when they're stopped, that 
they don't need help.
Thanks for the reply!
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