Forum Message

Topic: Re:Re:Re:Re:Re:Re:Re:Re:Re:Tube 24/7
Posted by: Michael Robinson
Date/Time: 25/08/16 12:00:00

"Surely if the peak time frequency is reduced by a stop at TG the problem could be resolved by adding additional trains ?"

There are a couple of problems with this:
- adding more trains means the trains would need to run closer together to maintain a particular service frequency.  The current signalling won't support this.

- where do additional trains come from?  The current stock of Piccadilly line trains is based upon the current frequency of service plus stock for replacing trains going out of service.  Additional 40 year old Piccadilly trains can't be ordered from Amazon, overnight delivery... A consequence of London Underground evolution from independent, privately owned lines is that train stock tends to be specific to a particular line and signalling, so you just can't take trains from one line and run it on another.

The frequency of service of a line affects so many things, such as the number of trains needed, the number of trains needed for replacements, space needed for overnight stabling, staffing and rostering (assuming there are still drivers...) so it is one of the key decisions made early on when planning upgrades and operations and just can't be changed on a whim.


Entire Thread
TopicDate PostedPosted By
Tube 24/719/08/16 19:18:00 Philip Coe
   Re:Tube 24/719/08/16 19:45:00 Richard Greenhough
      Re:Re:Tube 24/719/08/16 22:17:00 Gordon McDonald
         Re:Re:Re:Tube 24/720/08/16 10:22:00 Vanessa Smith
            Re:Re:Re:Re:Tube 24/723/08/16 06:46:00 Marlene Johnson
               Re:Re:Re:Re:Re:Tube 24/723/08/16 08:14:00 Anne England
               Re:Re:Re:Re:Re:Tube 24/723/08/16 08:57:00 Michael Robinson
                  Re:Re:Re:Re:Re:Re:Tube 24/723/08/16 10:22:00 Colin Jordan
                     Re:Re:Re:Re:Re:Re:Re:Tube 24/723/08/16 10:49:00 Michael Robinson
                  Re:Re:Re:Re:Re:Re:Tube 24/725/08/16 06:20:00 Marlene Johnson
                     Re:Re:Re:Re:Re:Re:Re:Tube 24/725/08/16 09:46:00 Michael Robinson
                        Re:Re:Re:Re:Re:Re:Re:Re:Tube 24/725/08/16 09:51:00 Richard Greenhough
                           Re:Re:Re:Re:Re:Re:Re:Re:Re:Tube 24/725/08/16 12:00:00 Michael Robinson
                     Re:Re:Re:Re:Re:Re:Re:Tube 24/725/08/16 13:06:00 Richard Jennings
                        Re:Re:Re:Re:Re:Re:Re:Re:Tube 24/725/08/16 14:25:00 Guy Lambert
                           Re:Re:Re:Re:Re:Re:Re:Re:Re:Tube 24/725/08/16 15:46:00 Michael Robinson
                              Re:Re:Re:Re:Re:Re:Re:Re:Re:Re:Tube 24/725/08/16 20:23:00 Guy Lambert
   Re:Tube 24/725/08/16 10:03:00 Mark Dixon
      Re:Re:Tube 24/725/08/16 14:09:00 Colin Jordan
         Re:Re:Re:Tube 24/725/08/16 14:19:00 Richard Greenhough
            Re:Re:Re:Re:Tube 24/725/08/16 14:48:00 Kevin Mitchell
               Re:Re:Re:Re:Re:Tube 24/725/08/16 15:20:00 Michael Robinson
                  Re:Re:Re:Re:Re:Re:Tube 24/725/08/16 21:21:00 Peter Evans
                     Crossrail effect and other stations which could 'close'26/08/16 08:50:00 Penelope Crocker
                        Re:Crossrail effect and other stations which could 'close'26/08/16 10:08:00 Michael Robinson
                           Re:Re:Crossrail effect and other stations which could 'close'26/08/16 11:54:00 Penelope Crocker
                              Re:Re:Re:Crossrail effect and other stations which could 'close'26/08/16 12:19:00 Michael Robinson
                                 Re:Re:Re:Re:Crossrail effect and other stations which could 'close'26/08/16 15:53:00 Penelope Crocker
            Re:Re:Re:Re:Tube 24/728/08/16 16:14:00 Marlene Johnson
               Re:Re:Re:Re:Re:Tube 24/728/08/16 16:41:00 Richard Greenhough
               Re:Re:Re:Re:Re:Tube 24/728/08/16 16:44:00 Richard Jennings
               Re:Tube 24/728/08/16 16:48:00 John Whitworth
   Re:Tube 24/726/08/16 12:01:00 Richard Greenhough
      Re:Re:Tube 24/726/08/16 13:02:00 Karen Foster
         Re:Re:Re:Tube 24/726/08/16 13:17:00 Andy Rooney
            Re:Re:Re:Re:Tube 24/726/08/16 15:24:00 Karen Foster

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