Re: [Melb] POTS (Position of Trains System)

[Richard <richard_snook@primus.com.au>]

DOes the current system employ a true GPS system...ie train is tracked (no pun intended) as per normal GPS to say within
10feet??

cheers >:~)) Richard

Christopher_Martin GORDON wrote:
> 
> : Dear Richard,
> : Before you can criticise, I think you better do a little bit of research -
> : Melbourne sparks have been using GPS since the TNT system was
> : discontinued.  For some reason, the GPS system did/is not work/ing
> : properly in Melbourne, trains were constantly being lost.  Just ask
> : "Railvic", who works at a Melb spark station, and must record all car
> : numbers as they go into the yard for stabling.
> : I think you better get your finger off the full stop key and do some
> : research before you start raving.
> 
> What?
> The TNT machines are still used between signal boxes, with some expections
> like Ringwood - Upper Ferntree Gully.
> 
> Finge boxes to Metrol use the VT100 machines. (ie Newport, Sunshine,
> Kensington, Upfield, Heidelberg, Burnley, and Caulfield)
> 
> The TNT only transmits the train number (and track, date and time)
> the record of the trains (ie Motor Car numbers) is done on paper and
> the fleet controllers will ring up to find out what is where.  That
> is what this POTS is replacing, first is to make the fleet controllers
> know where all their trains are with out ringing up and someone looking
> in the sidings.  Second is for the transmittion of the train numbers,
> ie to replace the TNT, Bell Codes and VT100 machines.
> 
> TNT = Train Number Transmitter, it looks like type writer and has a
> keyboard to enter the track number and TR number for a train, a little
> one line screen to show the trains coming from other signal boxes and
> it is all printed onto a roll of paper which is keeped and used if any
> problems come up.  (ie this train left here then, and this train did
> this etc...)
> 
> --
> 
> Chris Gordon
> http://www.ecr.mu.oz.au/~cmgord
> 
> +++++++++++++++++++++++++++++++++++++++++++++
> e-mail: cmgord@ecr.mu.oz.au
> e-mail: cmgord@alphalink.com.au (pictures)
> ICQ: 32989450
> Mobile Phone: Number on Request.