Hello,

dame_zumari@yahoo.com wrote:
> I don't know that line at all, but I suspect it might be like some of
> the commuter lines on the west side of Tokyo, where the trains come in
> from the outer districts and switch onto the subway lines, at least
> during the rush hours.

  Exactly.  Kameari station belongs to JR lines, but all the
trains come from Tokyo Metro Chiyoda line thru direct operation
(you *MUST NOT* take JR trains --- they are all rapid trains and
do not stop at Kameari).  Well, the situation is difficult even
for us Tokyo habitants.

Yasushi Kuno