Re: Melbourne tramways road markings

----- Original Message -----
From: "Chris Gordon" <[email protected]>
To: <[email protected]>
Sent: Saturday, January 04, 2003 6:05 PM
Subject: Re: [TramsDownUnder] Melbourne tramways road markings

The circles cover all pole trams, rear panto Zs and As (and assume Ws when
they have pantos), and Bs, Cs, and Ds regardless of which end they are
being driven from. The circles have been extended at many places to cover
the 5 section Ds.

AFAIK all circles have now been extended. Are you sure about the A's using
circles?

1 white dot
2 white dots
3 white dots

Can't remember between which dots for which activation for the
points. Used to be a set for pole trams (triggered using power on or off
on the overhead) or the transponders.

There shouldn't really be any need for 3 lots anymore, as there is almost
no points controlled from the overhead now.

The sensor is between the 1 dot and the 2 dots. If the driver wants to go
straight, he does nothing. If he wants to turn, he turns the points button
in the appropriate direction.

For the sake of example, we will assume Melbourne University shunt. The
first tram wants to turn into 1 shunt. He will turn the points button to
the right, wait for the points to click over (usually instantaneous) then
proceed. The tram behind is a Rt 1 tram and is going straight. Therefore
he will roll over the sensor without doing anything. A horizontal white bar
will appear on the signal display. This means the points will change once
the tram in front has cleared them. If the second tram goes over the 3
dots, the points will think this is the first tram which is still not
cleared. Make sense?







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