Posted 24 June 2011 - 02:56 PM
"Thank you for contacting us about the proposed changes this coming December to the train schedules from Amersham and Chesham.
As you know, timetable changes on a busy and complex network like London Underground often involve compromises and trade-offs between the needs of different groups of passengers. In making such changes we work on the principle that the negative impact from any proposed timetable change should be kept to a minimum and will only be tolerated if there is a significant positive benefit to other users on the line. The off-peak changes in December will result in some disbenefit to the relatively small number of passengers travelling to or from the north end of the line at the affected times, but these passengers will gain some compensating benefits from other changes to the timetable, while the additional stops on the ‘local lines’ will improve services for a larger number of passengers.
Over the course of a week there are an average of 53,000 off-peak journeys to or from Chesham, Amersham, Chalfont & Latimer, Chorleywood, Rickmansworth and Moor Park that will experience longer run-times (by up to 6.5 minutes) as a result of the additional stops. However, this group of passengers will benefit from the fact that their trains will become through trains to Aldgate rather than terminating at Baker Street, reducing the need to interchange for those travelling to destinations or connections in the City. Furthermore, an average of 141,000 off-peak journeys to or from Northwood, Northwood Hills, Pinner, North Harrow, Northwick Park and Preston Road on the ‘local lines’ will benefit from reduced platform wait times due to the increase in the frequency of stopping trains.
These changes to the scheduled service represent an overall benefit, particularly given that customers consistently place a higher value on reductions in platform wait time and interchanging when compared with on-train time. Furthermore, all passengers will also benefit from other changes in the December timetable designed to improve Metropolitan line reliability by reducing train lateness and congestion at bottlenecks.
The general manager of the Metropolitan line is Angela Back, and you can write to her at 13 Allsop Place, London NW1 5LJ.
Once again, thank you for writing in. I hope the above helps to explain the logic behind the proposed changes. Please contact me again if you need any help in the future.
Customer Service Advisor
Customer Service Centre"