On Sun, 20 Sep 2009 06:23:35 -0700 (PDT), Andy
wrote:

The Electrostars can change over on the move, but normally don't. I've
never been on a unit that's done it myself, but know of people who
have. On the West London Line at North Pole Junction, there's little
difference in the time spent stationary between a 313 and a 377,
although the PIS system on a 377 is sometimes still rebooting after
Shepherd's Bush when heading south.

It always struck me as very poor design that the PIS reboots when
changing voltage. Wouldn't it make more sense for it to operate from
a battery? Or were the units not designed for changing "on the fly"?

Neil

--
Neil Williams
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