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If TfL take over Moorgate services will they replace the 717s?

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JonathanH

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Will TfL keep the 717s if it takes control of the Northern City Line or will it want a more homogenous fleet?


Yes, of course it would keep the 717s. The trains are purpose built for the line and effectively operate on a self-contained network. What else do they need to be homogeneous with?
 

TT-ONR-NRN

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Yes, of course it would keep the 717s. The trains are purpose built for the line and effectively operate on a self-contained network. What else do they need to be homogeneous with?
London Overground operate a very simple fleet of very unique, solely Bombardier trains that are easily recognisable as London Overground. Class 717s are almost identical to the Thameslink trains that they work alongside, look nothing like the rest of London Overground’s fleet and are Siemens trains too! I wouldn’t be at all surprised if the 717s were mothballed like the 707s, and replaced by another order of 710s that would displace 378s off of the North London Line and onto the Moorgates. 378s have the emergency escape doors and this would keep the uniform London Overground look.
 

Ethano92

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Will TfL keep the 717s if it takes control of the Northern City Line or will it want a more homogenous fleet?


Even if they wanted a more homogenous fleet they wouldn't be able to order 710s for the line regardless since they don't have end doors for evacuation from the tunnels, TFL may perhaps choose to introduce some longitudinal seating however they're in no financial position to waste this fleet of purpose built units.
 
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hwl

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How would they “bring the service levels up”? TfL aren’t going to suddenly come along with more track capacity...
ETCS will (the current limitation is Moorgate approach control) and GTR ordered enough extra units for the uplift.
 

swt_passenger

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ETCS will (the current limitation is Moorgate approach control) and GTR ordered enough extra units for the uplift.
I should probably have written “beyond what is already planned“. You’d have to assume this would happen irrespective of whether TfL or a normal TOC was in place.
 

St. Paddy

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ETCS will (the current limitation is Moorgate approach control) and GTR ordered enough extra units for the uplift.
One of the biggest constraints to increasing frequency in the peak is change end times. It’s already at the minimum and ETCS won’t change that.
 

hwl

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One of the biggest constraints to increasing frequency in the peak is change end times. It’s already at the minimum and ETCS won’t change that.
Step up the drivers as LU do to get 36tph on the Victoria line in similar circumstances (Northern at Morden etc).
 

daniel1234321

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I mainly meant better service in terms of staffing and weekend services. GTR did at one point promise us 6 tph off peak weekdays and 4tph off peak weekends.
 

busesrusuk

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What is "face to face relief"? Why is it important and why can't be changed if it can increase the frequency of the service?
 

tarq

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Even if they wanted a more homogenous fleet they wouldn't be able to order 710s for the line regardless since they don't have end doors for evacuation from the tunnels

They could order more 710s for the NLL and other lines and redeploy 378s onto the NCL which I believe do have those doors for the Thames Tunnel.
 

JonathanH

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They could order more 710s for the NLL and other lines and redeploy 378s onto the NCL which I believe do have those doors for the Thames Tunnel.

No they couldn't. It would be a crazy decision to run 5-car trains on a 6-car railway that already has brand new 6-car units purpose built for it.
 

PG

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What is "face to face relief"? Why is it important and why can't be changed if it can increase the frequency of the service?
I'm sure others here can provide a better/fuller answer but I believe face to face relief is where one drivers duty driving a specific train ends and they hand over the train to another driver. Since they might have encountered an issue with the train then by having the relief face to face they can advise the next driver of the issue, always assuming that the issue wasn't serious enough to have warranted them reporting it already e.g. to their control.

I'm fairly sure it could be changed, it depends if the operator has the will to do it as it would probably involve rotas being rewritten and possibly increase the number of drivers required. That would likely increase the cost of running the service.
 

SynthD

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Step up the drivers as LU do to get 36tph on the Victoria line in similar circumstances (Northern at Morden etc).
Moorgate doesn't have tunnel space for runover. Brixton's extra tunnel space allows drivers to come in faster.
 

Domh245

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Moorgate doesn't have tunnel space for runover. Brixton's extra tunnel space allows drivers to come in faster.

The entry speed doesn't matter when it comes to 'stepping up'. Train can still trundle in as slow as currently but with stepping up there's already a driver at the north end of the platform and ready for the train to depart much sooner
 

Fred26

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The entry speed doesn't matter when it comes to 'stepping up'. Train can still trundle in as slow as currently but with stepping up there's already a driver at the north end of the platform and ready for the train to depart much sooner

Yeah, wouldn't get near 36tph, but 20tph would probably be achievable.
 

hwl

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Yeah, wouldn't get near 36tph, but 20tph would probably be achievable.
My point wasn't at aiming for 36tph (16 or 18tph with 2tph of spare paths for recovery every 30mins is perfectly sensible increase from PreCvoid levels) it was just illustrating what LU can do with everything optimised off the back of wanting to improve performance. The lack of overrun is a big limitation but the current 1970's approach control is an additional performance limitation on top, ETCS offers a round to remove most of the issue with the later which then leaves the issue of getting the driver to the other end often against passenger flow quickly enough to boot up the other cab at slightly higher than current higher tph, a two pronged approach is need to increase service levels.
Up till now there have been no push to improve service levels.
 
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