Macarthur Turnback - On Hold!

 
  cootanee Chief Commissioner

Location: North of the border!
"Planned construction of a turnback facility (including contruction of 1.1 kilometres of new track and a new fourth platform) has been reviewed and will now be delivered at a later date when necessary."

http://www.transport.nsw.gov.au/Projects-Completed-Projects/Rail-Clearways-Program

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  Keith1954 Junior Train Controller

Location: Macarthur
"Planned construction of a turnback facility (including contruction of 1.1 kilometres of new track and a new fourth platform) has been reviewed and will now be delivered at a later date when necessary."

http://www.transport.nsw.gov.au/Projects-Completed-Projects/Rail-Clearways-Program
"cootanee"


This makes good sense as the work was to allow freight trains not to be held up by terminatig Cityrail.  With the SSL now working there not held up.
  Groover Train Controller

Location: A long way from home
Now we just get delayed by terminating Cityrail, like last Friday night.
  Crazy-D Chief Train Controller

Could they not just modify Macarthur in a cheaper manner, say an earlier stage of it?

For example, something like modifying the current platform 1 to be the new UP platform and making platform 2 the terminating platform. In addition to that, moving the existing set of points to get to platform 1 (from the DOWN) south, and improving the speed of the points heading UP from platform. That way trains can terminate on platform 2 without obstructing through trains.

/armchair
  cootanee Chief Commissioner

Location: North of the border!
This makes good sense as the work was to allow freight trains not to be held up by terminatig Cityrail.  With the SSL now working there not held up.
Keith1954

Thing is that this project was announced after the SSFL commenced so what changed (perhaps no money in the kitty Surprised )

Mostly evening peak hour delays getting into Macarthur platforms 1/2 are caused by Cityrail trains heading back from Macas or those terminating at Shambles waiting to get across to platforms 1/2 (although a plus now is that fewer terminate at 3).

Only occasionally you waited outside Macas for an RTM special or a freightie.
  stupid_girl Assistant Commissioner

It makes perfect sense.

Bondi Junction, with only 2 platforms, turn back twice as many trains as Macarthur.

If Cityrail re-configure the track layout properly, ie. use 2 platforms as a BJ-style turnback and a third platform for Southern Highlands, there is definitely no need for a fourth platform.
  cootanee Chief Commissioner

Location: North of the border!
It makes perfect sense.

Bondi Junction, with only 2 platforms, turn back twice as many trains as Macarthur.

If Cityrail re-configure the track layout properly, ie. use 2 platforms as a BJ-style turnback and a third platform for Southern Highlands, there is definitely no need for a fourth platform.
stupid_girl

For the evening peak the current arrangements get out of wack all too often. This will continue as long as a down train has to cross over to platform 1/2 at the same time an up train is departing either.
  Watson374 Chief Commissioner

Location: Fully reclined at the pointy end.
For the evening peak the current arrangements get out of wack all too often. This will continue as long as a down train has to cross over to platform 1/2 at the same time an up train is departing either.
"cootanee"
The crossover only occurs if an arriving train is coming into #2 and a departing train is leaving #1.

In any case, it's still a very effective implementation of the Brixton-type terminus.
  bowralcommuter Chief Commissioner

Location: Asleep on a Manly Ferry
Is it really worth building an extra platform that will only get used from 18:00-19:00?
  Piston Train Controller

What dingbat came up with the idea that we would need four platforms at Macarthur in the first place? Railcorp management obviously agreed and it was all planned to go ahead until now. No wonder Railcorp looses so much with these hairbrain schemes.

If their answer was there is too much congestion at Campbelltown, then identify the problem and redesign and fix it. May be their crystal ball didn't know that the SSFL would take traffic away from the up and down Mains at Macarthur and theoretically you could park a train all day in Platform 1 and 2 and still get past via platform 3.

I still don't understand why four platforms are needed at Liverpool, I suppose the same dingbat designed this one as well.
  cootanee Chief Commissioner

Location: North of the border!
The crossover only occurs if an arriving train is coming into #2 and a departing train is leaving #1.

In any case, it's still a very effective implementation of the Brixton-type terminus.
Watson374

Nope...

Seems to be the pm norm because both 1 and 2 are occupied and one is due to depart but hasn't. The arriving train inevitably sits outside Macas then pulls in a few minutes later than tabled (ironically having arrived on-time or early at Shambles and sitting there for 2-3 mins Rolling Eyes).

Of course throw in any sort of delay, it all gets too much so they dump people off trains at Shambles.
  Watson374 Chief Commissioner

Location: Fully reclined at the pointy end.
Nope...

Seems to be the pm norm because both 1 and 2 are occupied and one is due to depart but hasn't. The arriving train inevitably sits outside Macas then pulls in a few minutes later than tabled (ironically having arrived on-time or early at Shambles and sitting there for 2-3 mins Rolling Eyes).

Of course throw in any sort of delay, it all gets too much so they dump people off trains at Shambles.
"cootanee"
I was talking about the BJ, not Maccas 'n' Shambles.
  cootanee Chief Commissioner

Location: North of the border!
I was talking about the BJ, not Maccas 'n' Shambles.
Watson374

Thought you were commenting on Macarthur situation. Now back to where this is...

Having trains sit in Macas for 15min is part of the problem. If this layover was cut by a third they would have 5 mins stuff around time before the next is due in. As it is trains sometimes end up going straight through to platform 3 where the southern highlands service is or now will be delayed.

The whole idea was to expand the role of Macs as a terminus (having completed Stage 1 works) and take the pressure of Shambles.
  bowralcommuter Chief Commissioner

Location: Asleep on a Manly Ferry
Thought you were commenting on Macarthur situation. Now back to where this is...

Having trains sit in Macas for 15min is part of the problem. If this layover was cut by a third they would have 5 mins stuff around time before the next is due in. As it is trains sometimes end up going straight through to platform 3 where the southern highlands service is or now will be delayed.

The whole idea was to expand the role of Macs as a terminus (having completed Stage 1 works) and take the pressure of Shambles.
cootanee
The 04:59 Goulburn train does sit idle for >5 minutes south of the station in peak hour waiting for platform 2 or 3 to clear, if its more than about 7 minutes late, missing the connecting City via Sydenham. However this happens about once a month on average (more often last year with the ARTC speed restrictions) and not worthy of a new platform on its own as I'm sure we know.
  Straya Station Staff

Is this really necessary, aren't some services about to be diverted down the south west rail link
  Straya Station Staff

Is this really necessary, aren't some services about to be diverted down the south west rail link
  awsgc24 Minister for Railways

Location: Sydney
Is this really necessary, aren't some services about to be diverted down the south west rail link
Straya

Maybe, but the real point of the extra platform at Macarthur is to allow turnround times to be INCREASED from say 10minutes to 20minutes, so that a down train train that arrives 10 late can return on time, thus separating UP and DOWN services.

A turnback is the only place that RECOVERY MARGINS can be inserted into the timetable without slowing the service (the train is empty and stationary).

Passengers notice recovery margins in the middle of journeys, and tend not to like them.

With the extra turnback times, journeys with passengers on the trains can be sped up, while improving reliability.

One new turnout, 1200m of track, and an extra platform face using existing lifts and stairs means that MAC P4 should be simple, fairly low cost, especially compared to the SWR which costs $x00m.

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