Re: trial CityRail signage and info systems

["Hubert Lam" <hubert@softhome.net>]

So that's why the announcements are made so precisely- just when the doors
open!

Hubert Lam

David Johnson wrote in message <3635B1B2.FA67F073@ozemail.com.au>...
boofheadpaul@yahoo.com.au wrote:

>  Generally, announcements are made when the board
> changes, 5 mins before the train arrives (and 2 minutes depending of the
SPI's
> location) and when the train arrives - sometimes more often.  So in other
> words the only time you will not hear a recorded announcement is when the
SPI
> system is down.

SPIes installed in signal boxes (Blacktown, Granville, Sutherland, Sydenham)
are
connected to the track circuits which trigger the announcements at when the
train
gets to a certain point.  The down side of this is that if a train is
cancelled,
and the SPI is not updated, the rest of the trains for the day are one train
out.

--
David Johnson
CityRail Guard
trainman@ozemail.com.au
http://www.ozemail.com.au/~trainman/