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Author Topic: Service patterns in a post CRRlite world  (Read 2318 times)

somebody

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Service patterns in a post CRRlite world
« on: June 24, 2012, 11:45:18 AM »
What service patterns should apply south/west once we have CRRlite?  Feel free to include any amplifications on the Cleveland line you feel are justified + additional crossovers, but let's keep it to three electric tracks Corinda-Darra and triplication to Loganlea + duplication of the Coomera River bridge.

I think off peak:
4tph Ipswich all to Darra, Indro, Toowong, Milton all to Bowen Hills
4tph Springfield all to Bowen Hills
4tph to Manly at least, ideally extending to Cleveland
4tph to Corinda via South Brisbane
3tph to Varsity Lakes via W'Gabba
3tph all to Beenleigh via W'Gabbal

peak:
3.33tph to Rosewood, stopping Roma St, Darra, Goodna all to Rosewood
3.33tph to Ipswich, stopping Roma St, Darra, Goodna all to Ipswich
6.67tph to Ipswich, stopping Roma St, Milton, Toowong, Indooroopilly, Oxley all to Ipswich
6.67tph all to Corinda
?/hr all to Springfield via South Brisbane
6tph to Varsity Lakes via W'Gabba
6tph all to Kuraby
6tph limited to Beenleigh
?tph all to Manly/Lota
same to Cleveland stopping all to Park Rd then Morningside, Manly all to Cleveland

AM peak for Springfield does not have a cross platform interchange to reach Milton without additional crossovers allowing inbound trains from Ipswich to serve Darra #3.  PM peak allows it at Corinda and Oxley.

Major question with the above is will 6tph be sufficient for the Gold Coast
« Last Edit: June 24, 2012, 12:55:56 PM by Simon »

Offline SurfRail

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Re: Service patterns in a post CRRlite world
« Reply #1 on: June 24, 2012, 03:31:39 PM »
For the southside, if you are bringing back Corinda via South Brisbane, I would suggest the following CRR patterns:
- 8tph peak / 4tph off-peak all stations to Loganlea
- 6tph / 2tph express to Loganlea, then all stations to Helensvale
- 4tph / 2tph express to Coomera, then all stations to Varsity Lakes/beyond

Helensvale needs at least a 15 minute frequency off-peak to properly support the RTS (even if there is still an intermediate bus journey and not simply a transfer to a tram here).  15 min frequency will also support the Coomera town centre.  Eventually I would suggest each of these 3 patterns could support 15 min off-peak, maybe more for the Loganlea all-stopper.

Even in peak, there is still heaps of room for extra services (incl Flagstone) - about another 8. 

Not every service would need to be 6-cars initially but over time they would all be bulked up.
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somebody

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Re: Service patterns in a post CRRlite world
« Reply #2 on: June 24, 2012, 03:44:48 PM »
Why is Coomera such an important stop that the VL trains need to serve it?  I´d add a stop at Loganlea to those trains, of course.

Interesting, I think you have something there.

Offline BrizCommuter

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Re: Service patterns in a post CRRlite world
« Reply #3 on: June 24, 2012, 08:10:38 PM »
Foaming ideas in thread would be very dependent upon the track layouts that will be constructed at Yeerongpilly and Mayne, and whether any other track amplifications take place between now and the opening of half-baked CRR. 

somebody

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Re: Service patterns in a post CRRlite world
« Reply #4 on: June 24, 2012, 08:32:26 PM »
Foaming ideas in thread would be very dependent upon the track layouts that will be constructed at Yeerongpilly and Mayne, and whether any other track amplifications take place between now and the opening of half-baked CRR.
If you don't see benefit in prognosticating, you don't have to.  But what is foaming about bringing back via Tennyson?  You could argue that there would be a conflicting move at Corinda in the AM peak with Springfield via South Brisbane I guess.  There seem to be no conflicting moves at Yeerongpilly any more.

Offline Cam

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Re: Service patterns in a post CRRlite world
« Reply #5 on: June 24, 2012, 08:36:41 PM »
I think off peak:
4tph Ipswich all to Darra, Indro, Toowong, Milton all to Bowen Hills
4tph to Corinda via South Brisbane

What about passengers from Wacol to Rosewood in the off peak wanting to travel to stations between Yeerongpilly & South Brisbane? I'm not suggesting that Rosewood/Ipswich express services stop at Corinda. Rather, the services via South Brisbane should start at least as far out as Darra. There is the possibility that these could start at Redbank which would allow Rosewood/Ipswich services to skip Wacol & Gailes. Some will probably travel to/from Redbank anyway to the new stabling yard.

Offline Derwan

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Re: Service patterns in a post CRRlite world
« Reply #6 on: June 24, 2012, 09:39:52 PM »
3tph to Varsity Lakes via W'Gabba
3tph all to Beenleigh via W'Gabbal

Which trains don't go via Woolloongabba - and would service Dutton Park to Yeronga?
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Offline Golliwog

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Re: Service patterns in a post CRRlite world
« Reply #7 on: June 24, 2012, 09:59:26 PM »
3tph to Varsity Lakes via W'Gabba
3tph all to Beenleigh via W'Gabbal

Which trains don't go via Woolloongabba - and would service Dutton Park to Yeronga?
I'm assuming that would be the Springfield to City via South Brisbane services. So long as your not planning any Beenleigh line services to continue to run via South Brisbane, this would be ok on that side.
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somebody

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Re: Service patterns in a post CRRlite world
« Reply #8 on: June 24, 2012, 10:32:11 PM »
What about passengers from Wacol to Rosewood in the off peak wanting to travel to stations between Yeerongpilly & South Brisbane? I'm not suggesting that Rosewood/Ipswich express services stop at Corinda. Rather, the services via South Brisbane should start at least as far out as Darra. There is the possibility that these could start at Redbank which would allow Rosewood/Ipswich services to skip Wacol & Gailes. Some will probably travel to/from Redbank anyway to the new stabling yard.
I guess they have to double change at Darra and Corinda or single change at Roma St.

This would be where there would be benefit in the 4th platform at Oxley, I guess.  You could run the via South Brisbane trains through to Springfield full time.  On present infrastructure there would be conflicting moves doing that in both directions simultaneously.  In the AM peak the conflicting moves are unavoidable at Corinda but IMO manageable.

3tph to Varsity Lakes via W'Gabba
3tph all to Beenleigh via W'Gabbal

Which trains don't go via Woolloongabba - and would service Dutton Park to Yeronga?
Off peak the Corinda via Tennyson/South Brisbane trains.

Offline Golliwog

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Re: Service patterns in a post CRRlite world
« Reply #9 on: June 24, 2012, 11:32:52 PM »
I don't think having Springfield-City having different routes in peak and off peak (via Tennyson vs. Ipswich line) is going to be a good idea. I can see why you did it (so the outer Ipswich line gets full time express services) but it's just needless change. If you're doing it like that then Springfield would always be via Tennyson, and Corinda starters would run the inner Ipswich line. Though for interchange purposes you'd either have the expresses stop at Corinda (maybe instead of Darra?) or extend the Corinda starters to Darra/Springfield.
There is no silver bullet… but there is silver buckshot.
Never argue with an idiot. They'll drag you down to their level and beat you with experience.

somebody

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Re: Service patterns in a post CRRlite world
« Reply #10 on: June 25, 2012, 10:14:02 AM »
I don't think having Springfield-City having different routes in peak and off peak (via Tennyson vs. Ipswich line) is going to be a good idea.
I agree that is a limitation, which is why I posted this:
This would be where there would be benefit in the 4th platform at Oxley, I guess.  You could run the via South Brisbane trains through to Springfield full time.  On present infrastructure there would be conflicting moves doing that in both directions simultaneously.  In the AM peak the conflicting moves are unavoidable at Corinda but IMO manageable.

I think the journey time is only a few minutes slower for Corinda via Tennyson as compared to via Indooroopilly, which is where I don't think it's a huge deal to send all the peak Springfields that way.  I think this makes far more sense than express Springfield trains on the current population of Springfield.

somebody

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Re: Service patterns in a post CRRlite world
« Reply #11 on: June 27, 2012, 10:06:25 AM »
The proposed flyover from between Oxley and Corinda in between the mains to the Tennyson loop, when combined with a 6th platform at Corinda (perhaps by shortening/removing the freight passing loop) would remove the remaining additional conflicting move in this operating pattern.  There would still be the conflicting move east of Darra in the PM peak with inbound trains from Springfield crossing Ipswich bound, but that would be it.  I think the freight passing loop would no longer be necessary with such a flyover.

Offline SurfRail

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Re: Service patterns in a post CRRlite world
« Reply #12 on: June 27, 2012, 10:55:08 AM »
Maybe:

Western Mains to Northern Subs
 
•   Ipswich/Rosewood - Airport (express Redbank to Milton stopping only at Darra, Corinda, Indooroopilly and Toowong, then all stations, but express Albion and Wooloowin if contractually required)
•   Redbank - Shorncliffe (all stations)

South Bank to Ferny Grove/Northern Subs (slight conflict between Doomben and Shorncliffe/Airport at Eagle Junction and Mayne - Eagle Junction is not avoidable, and Mayne is needed because there is capacity on the subs that the mains would not have by this point)

•   Springfield/Tennyson - Doomben (all stations)
•   Cleveland - Ferny Grove (all stations)

CRR Lite

•   Kuraby - Kippa-Ring - all stations Kuraby to Yeerongpilly, all to Ekka, Eagle Junction, Northgate, all to Petrie and Kippa-Ring
•   Beenleigh - Caboolture - all stations Beenleigh to Kuraby, Yeerongpilly, all to Ekka, Eagle Junction, Strathpine, Petrie, all to Caboolture
•   Gold Coast - Sunshine Coast - all stations Varsity Lakes to Beenleigh, Yeerongpilly, all to Ekka, Eagle Junction, Caboolture, all to Nambour

Not sure on whether Kippa-Ring or Caboolture would pull in more passengers, but if necessary the above would change so that the busiest service went express from Petrie inbound.
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somebody

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Re: Service patterns in a post CRRlite world
« Reply #13 on: June 27, 2012, 11:11:29 AM »
^ I can certainly see it being prudent to send Shorncliffe back to the mains outside of peak hour.  It saves more conflicting moves than it costs, and also increases through running.

 

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