| Topic: | Re:Re:Re:Re:Re:Re:Re:Tube 24/7 | |
| Posted by: | Michael Robinson | |
| Date/Time: | 25/08/16 09:46:00 |
| "1.5 minutes to stop at TG, hardly an inconvenience" Just do some simple maths. Peak time frequency on the Piccadilly line is 21 trains per hour or a train almost every 3 minutes. Add an additional 1.5 minutes delay and that reduces the peak time frequency to a train almost every 4.5 minutes or about 14 trains an hour. That would mean a reduction of Piccadilly line peak time capacity by about a third, or about 5,000 fewer passengers an hour. I hope it is obvious that if you decrease service frequency, you decrease the number of people carried and if you add more stops and want to maintain service frequency, trains need to accelerate and decelerate faster between stations to do this. Existing Piccadilly line signalling and trains can't do this, that is why new signalling is needed. "The excuses we have had over the years have include signalling issues, (but surely in the last 35 years this could have been addressed" The lifespan of a tube train is about 40 years and the price to replace trains and signalling on a line comes to about £5 billion pounds in current money. How often do you think this sort of money should be spent? The reality is it gets done every 30-40 years and the upgrades are planned decades in advance. As I explained in my previous post, the Piccadilly line trains and signalling should have been upgraded about 5 years earlier than current plans but TfL's screw-up with District line signalling has delayed the Piccadilly line (and subsequent upgrades, the next after the Piccadilly is the Bakerloo) "I rest my case. There is no political will." As I explain above, what politician or manager in their right mind would push for a project that would mean a large reduction of peak time capacity on the Piccadilly line just for a small number of people at Turnham Green to save a few minutes? It is easy to demand something when there is no accountability or knowledge of the facts, but when politicians have had the accountability and know the facts, funnily enough, they stop demanding... |
| Topic | Date Posted | Posted By |
| Tube 24/7 | 19/08/16 19:18:00 | Philip Coe |
| Re:Tube 24/7 | 19/08/16 19:45:00 | Richard Greenhough |
| Re:Re:Tube 24/7 | 19/08/16 22:17:00 | Gordon McDonald |
| Re:Re:Re:Tube 24/7 | 20/08/16 10:22:00 | Vanessa Smith |
| Re:Re:Re:Re:Tube 24/7 | 23/08/16 06:46:00 | Marlene Johnson |
| Re:Re:Re:Re:Re:Tube 24/7 | 23/08/16 08:14:00 | Anne England |
| Re:Re:Re:Re:Re:Tube 24/7 | 23/08/16 08:57:00 | Michael Robinson |
| Re:Re:Re:Re:Re:Re:Tube 24/7 | 23/08/16 10:22:00 | Colin Jordan |
| Re:Re:Re:Re:Re:Re:Re:Tube 24/7 | 23/08/16 10:49:00 | Michael Robinson |
| Re:Re:Re:Re:Re:Re:Tube 24/7 | 25/08/16 06:20:00 | Marlene Johnson |
| Re:Re:Re:Re:Re:Re:Re:Tube 24/7 | 25/08/16 09:46:00 | Michael Robinson |
| Re:Re:Re:Re:Re:Re:Re:Re:Tube 24/7 | 25/08/16 09:51:00 | Richard Greenhough |
| Re:Re:Re:Re:Re:Re:Re:Re:Re:Tube 24/7 | 25/08/16 12:00:00 | Michael Robinson |
| Re:Re:Re:Re:Re:Re:Re:Tube 24/7 | 25/08/16 13:06:00 | Richard Jennings |
| Re:Re:Re:Re:Re:Re:Re:Re:Tube 24/7 | 25/08/16 14:25:00 | Guy Lambert |
| Re:Re:Re:Re:Re:Re:Re:Re:Re:Tube 24/7 | 25/08/16 15:46:00 | Michael Robinson |
| Re:Re:Re:Re:Re:Re:Re:Re:Re:Re:Tube 24/7 | 25/08/16 20:23:00 | Guy Lambert |
| Re:Tube 24/7 | 25/08/16 10:03:00 | Mark Dixon |
| Re:Re:Tube 24/7 | 25/08/16 14:09:00 | Colin Jordan |
| Re:Re:Re:Tube 24/7 | 25/08/16 14:19:00 | Richard Greenhough |
| Re:Re:Re:Re:Tube 24/7 | 25/08/16 14:48:00 | Kevin Mitchell |
| Re:Re:Re:Re:Re:Tube 24/7 | 25/08/16 15:20:00 | Michael Robinson |
| Re:Re:Re:Re:Re:Re:Tube 24/7 | 25/08/16 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 24/7 | 28/08/16 16:14:00 | Marlene Johnson |
| Re:Re:Re:Re:Re:Tube 24/7 | 28/08/16 16:41:00 | Richard Greenhough |
| Re:Re:Re:Re:Re:Tube 24/7 | 28/08/16 16:44:00 | Richard Jennings |
| Re:Tube 24/7 | 28/08/16 16:48:00 | John Whitworth |
| Re:Tube 24/7 | 26/08/16 12:01:00 | Richard Greenhough |
| Re:Re:Tube 24/7 | 26/08/16 13:02:00 | Karen Foster |
| Re:Re:Re:Tube 24/7 | 26/08/16 13:17:00 | Andy Rooney |
| Re:Re:Re:Re:Tube 24/7 | 26/08/16 15:24:00 | Karen Foster |