VRIOGS 012.0.4 RevA - Public Transport Victoria

VRIOGS 012.0.4 Revision A 5
4.3 Metropolitan Inner Area Numbering
a) The Inner Area controlled signals, i.e. home, controlled automatic or dwarf
signals have a three digit designation starting with an odd number. Each group
shall have its own distinctive number as shown below. In addition some
locations may also have a redundant three alpha character abbreviation of the
location.
The Clifton Hill Group Lines 100 to 199
The Burnley Group Lines 300 to 399
The Northern Group Lines 500 to 599
The Caulfield Group Lines 700 to 799
The Sandringham Group Lines 900 to 999
b) Automatic signals and points shall be numbered as follows:
The Clifton Hill Group Lines 000 to 099
The Burnley Group Lines 200 to 299
The Northern Group Lines 400 to 499
The Caulfield Group Lines 600 to 699
The Sandringham Group Lines 800 to 899
c) Points are numbered one hundred less than the nearest signal reading through
those points, e.g. the points in advance of signal 304 would be numbered 204.
The points naming conventions are further defined as follows:
i) If the signal covering the facing point move is a similar distance from the
signals covering the trailing moves, the points shall be numbered 100
less than the signal covering the facing point move.
ii)
If the signals covering the trailing move are located closer to the toe of
the points than the signal covering the facing move, the points shall be
numbered 100 less than the signal covering the trailing move for the
normal lie.
d) Track circuits shall follow the signal numbers as much as possible, but where
additional tracks are in the block because of points, the point number or other
spare numbers in the series shall be used. This is to avoid using such numbers
as A302T, B302T, C302T, etc. The Train Describer computers are
programmed to accept 3 digit numbers only and therefore the prefixes A, B, C
etc. are unacceptable data. The track circuit naming conventions are further
defined as follows:
i) If a home signal opposes a dwarf signal over the same track circuit,
the track circuit shall be named after the home signal.
ii) If a home signal opposes another home signal over the same track
circuit, the track circuit shall be named after the up direction signal.
iii) If signals read through a set of points the track circuit shall be named
after the points number.
iv) If the track in advance of the signal has already been allocated due to
any of the above conventions, the berth track for the signal may be
named after the signal.
v) Track circuits in the block, which after following the above conventions
have not been named, shall be named using sequential numbering;
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