On Sun, 01 Sep 2013 20:21:28 +0100
Paul Corfield wrote:
upgraded line in recent years. The Vic Line was closed across the
Central Area and elsewhere for weekend after weekend. We endured years

The Vic line was switching from one ATO system to another with potential
interworking and interference issues. The northern line is switching to ATO
from trip cocks and signals with no possibility of the new system affecting
the old. Therefor it would be entirely possible for them to install the lot
then test it every night for months on end for a few hours each time with no
inconvenience to the public.

--
Spud