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Heathrow runway will create £16bn burden for TfL
On 29/04/2016 10:57, Roland Perry wrote:
In message , at 09:43:18 on Fri, 29 Apr 2016, Someone Somewhere remarked: Latest annual station usage stats: T123 7.49m T5 3.90m T4 2.35m Is that it? Any ideas about the Hex and Connect? If only there was a way to find things like that out. Hold on, I'll see if Tim Berners Lee has any ideas. Page was, and continues to be, broken right now! Given the number of passengers through Heathrow each year, let alone staff, those numbers seem terribly low. HEx is 5.84m a year and Connect a lowly 0.4m . There is expected to be a sizeable shift from the Piccadilly Line to Crossrail when it opens. The airport had 73m passengers in 2014, but 26m were transfers, so 47m landside. T5 is by far the busiest, with twice as many as the next busiest (T3). Overall, 40% are reported to use public transport, which sounds about right - adding up the figures above actually gives 42%, but there's also bus and coaches, offset from that some of the passengers are staff (but with unsocial hours, over 17,500 free staff car parking spaces on site and a vigorous car-sharing policy, their use of public transport is naturally going to be low). Plus I guess some number of people seeing off or collecting people which probably makes up the difference. |
Heathrow runway will create £16bn burden for TfL
Roland Perry wrote:
In message , at 09:43:18 on Fri, 29 Apr 2016, Someone Somewhere remarked: Latest annual station usage stats: T123 7.49m T5 3.90m T4 2.35m Is that it? Any ideas about the Hex and Connect? If only there was a way to find things like that out. Hold on, I'll see if Tim Berners Lee has any ideas. Given the number of passengers through Heathrow each year, let alone staff, those numbers seem terribly low. HEx is 5.84m a year and Connect a lowly 0.4m . There is expected to be a sizeable shift from the Piccadilly Line to Crossrail when it opens. Yes, that sounds likely, though it may be affected by the relative fare levels (I've, if Crossrail is a lot more expensive than the Tube). The airport had 73m passengers in 2014, but 26m were transfers, so 47m landside. T5 is by far the busiest, with twice as many as the next busiest (T3). T2 is probably the second busiest now. T4 is now very quiet as some airlines have moved from it to T2. Overall, 40% are reported to use public transport, which sounds about right - adding up the figures above actually gives 42%, but there's also bus and coaches, offset from that some of the passengers are staff (but with unsocial hours, over 17,500 free staff car parking spaces on site and a vigorous car-sharing policy, their use of public transport is naturally going to be low). Many staff may also use Hatton Cross, whereas I assume few passengers do. |
Heathrow runway will create £16bn burden for TfL
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Heathrow runway will create £16bn
On Fri, 29 Apr 2016 14:55:21 -0000 (UTC)
Recliner wrote: Roland Perry wrote: In message , at 09:43:18 on Fri, 29 Apr 2016, Someone Somewhere remarked: Latest annual station usage stats: T123 7.49m T5 3.90m T4 2.35m Is that it? Any ideas about the Hex and Connect? If only there was a way to find things like that out. Hold on, I'll see if Tim Berners Lee has any ideas. Given the number of passengers through Heathrow each year, let alone staff, those numbers seem terribly low. HEx is 5.84m a year and Connect a lowly 0.4m . There is expected to be a sizeable shift from the Piccadilly Line to Crossrail when it opens. Yes, that sounds likely, though it may be affected by the relative fare levels (I've, if Crossrail is a lot more expensive than the Tube). One would hope it will simply be zone based and BAA won't throw their toys out the pram and demand a surcharge for using their track. Perhaps its time for a compulsory purchase of the permanent way. -- Spud |
Heathrow runway will create £16bn
wrote:
On Fri, 29 Apr 2016 14:55:21 -0000 (UTC) Recliner wrote: Roland Perry wrote: In message , at 09:43:18 on Fri, 29 Apr 2016, Someone Somewhere remarked: Latest annual station usage stats: T123 7.49m T5 3.90m T4 2.35m Is that it? Any ideas about the Hex and Connect? If only there was a way to find things like that out. Hold on, I'll see if Tim Berners Lee has any ideas. Given the number of passengers through Heathrow each year, let alone staff, those numbers seem terribly low. HEx is 5.84m a year and Connect a lowly 0.4m . There is expected to be a sizeable shift from the Piccadilly Line to Crossrail when it opens. Yes, that sounds likely, though it may be affected by the relative fare levels (I've, if Crossrail is a lot more expensive than the Tube). One would hope it will simply be zone based and BAA won't throw their toys out the pram and demand a surcharge for using their track. Perhaps its time for a compulsory purchase of the permanent way. As long as there's a separate, premium-priced HEx service, I can't see HAL cooperating in allowing pure zonal fares on the Lizzy Line, just as HCon doesn't have them. |
Heathrow runway will create £16bn burden for TfL
In message
-sept ember.org, Recliner wrote: Looking at the evening peak, there's 23 trains leaving Gloucester Road between 17:00 and 18:00, split 11 to Heathrow (6:5 between the T4 and T5) and 12 towards Rayners Lane (7 to Uxbridge). There's 23 between 18:00 and 19:00, now split 13:10 (still 7 to Uxbridge). That's not "much more intense". Those figures don't sound right. I've been using the Piccadilly line Rayner's Lane branch since well before the Heathrow extensions opened, and the service used to be split evenly between the two western branches. Now, I sometimes have to wait for three or even four Heathrow trains to pass before a Rayner's Lane or Uxbridge train shows up. I find it really hard to believe there's any hour in the day when more trains go to Rayner's Lane/Uxbridge than to Heathrow. My observation is that at least 60% go to Heathrow. Those figures were taken straight from the TfL on-line timetable pages. Yes, *but* that wasn't the basis they were ordered on. True, but in effect some of the S stock trains have replaced Piccadilly trains transferred from the Uxbridge services to Heathrow. I don't know if that is true, because I don't have service data for the various branches over time. You'd have to show that (a) the Uxbridge branch gets a better peak service now than in the past (peak since that's when most trains are used) and (b) that requires more trains than before rather than being done through better turnaround. Somebody (not me) who keeps old issues of Underground News could look for old working timetable information. -- Clive D.W. Feather | Home: Mobile: +44 7973 377646 | Web: http://www.davros.org Please reply to the Reply-To address, which is: |
Heathrow runway will create £16bn burden for TfL
Clive D. W. Feather wrote:
In message -sept ember.org, Recliner wrote: Looking at the evening peak, there's 23 trains leaving Gloucester Road between 17:00 and 18:00, split 11 to Heathrow (6:5 between the T4 and T5) and 12 towards Rayners Lane (7 to Uxbridge). There's 23 between 18:00 and 19:00, now split 13:10 (still 7 to Uxbridge). That's not "much more intense". Those figures don't sound right. I've been using the Piccadilly line Rayner's Lane branch since well before the Heathrow extensions opened, and the service used to be split evenly between the two western branches. Now, I sometimes have to wait for three or even four Heathrow trains to pass before a Rayner's Lane or Uxbridge train shows up. I find it really hard to believe there's any hour in the day when more trains go to Rayner's Lane/Uxbridge than to Heathrow. My observation is that at least 60% go to Heathrow. Those figures were taken straight from the TfL on-line timetable pages. Strange, my experience is very different. Is that hour atypical? It certainly seems that way to me, a regular user of the line. Yes, *but* that wasn't the basis they were ordered on. True, but in effect some of the S stock trains have replaced Piccadilly trains transferred from the Uxbridge services to Heathrow. I don't know if that is true, because I don't have service data for the various branches over time. You'd have to show that (a) the Uxbridge branch gets a better peak service now than in the past (peak since that's when most trains are used) and (b) that requires more trains than before rather than being done through better turnaround. It's my very strong anecdotal memory, but not something I can prove. But it's not necessarily the case that the Uxbridge branch gets a better service overall (though I think it probably does), just that a much higher proportion of the trains are now Met rather than Picc. There is a frequent Met service at Uxbridge now, but a very infrequent Picc service. And I don't think there are any Picc reversers between Rayner's Lane and Uxbridge (eg, at Ruislip or Ickenham) any more; the reversers now no longer get beyond Rayner's Lane. Somebody (not me) who keeps old issues of Underground News could look for old working timetable information. I don't keep mine either. |
Heathrow runway will create £16bn burden for TfL
In article , (Someone
Somewhere) wrote: On 29/04/2016 16:12, wrote: In article , (Someone Somewhere) wrote: On 29/04/2016 10:57, Roland Perry wrote: In message , at 09:43:18 on Fri, 29 Apr 2016, Someone Somewhere remarked: snip Given the number of passengers through Heathrow each year, let alone staff, those numbers seem terribly low. snip offset from that some of the passengers are staff (but with unsocial hours, over 17,500 free staff car parking spaces on site and a vigorous car-sharing policy, their use of public transport is naturally going to be low). snip This discussion ignores the journeys to and fro of the people who work there, surely? They are supposed to be a large part of the Connect target market. In what way "ignores"? I said "let alone staff"? and Roland mentioned that some are staff and some good reasons why there are not more staff. The actual figures were all passengers. -- Colin Rosenstiel |
Heathrow runway will create £16bn burden for
In message
-sept ember.org, at 08:27:22 on Fri, 29 Apr 2016, Recliner remarked: Further into the future, if a third runway is built, there will be a new western terminal, which may be adjacent to T5, and share its three underground stations. There are only two. Recent poorly-written articles about a "secret station" are in fact about extra as-yet-unused platforms at the heavy rail station. When it eventually opens, who knows whether it will be shown as a new GWR station or a pair of extra platforms at what is currently the HEx station? The GWR station may be gated, the HEx station isn't, as it's free to the central station. It's inevitable that it'll be just one station because there will be through trains (I don't think it's yet been decided if HEx or Crossrail would run the 2tph Paddington-Heathrow-Reading trains; very unlikely to be FGW or successor). Through trains will presumably use the current HEx platform pair. The currently unused platform pair could be used for a different service, perhaps to Staines and beyond. You can't have terminating and reversing trains using the same platform as though trains because the through trains will be right behind a terminating one and therefore considerably delayed. -- Roland Perry |
Heathrow runway will create £16bn burden for TfL
In message
-septe mber.org, at 09:16:21 on Fri, 29 Apr 2016, Recliner remarked: If you only want to look at phase 1, fair enough. The analysis will have to be for the period from 1977 to 1986, when T4 opened. What was the rate of return, positive or negative, on the capital investments in the extended line, stations (two all-new and one re-built) and four extra trains, made over those ten years? I produced a figure of 7%, if you have a better one please explain your workings. -- Roland Perry |
Heathrow runway will create £16bn burden for
Roland Perry wrote:
In message -sept ember.org, at 08:27:22 on Fri, 29 Apr 2016, Recliner remarked: Further into the future, if a third runway is built, there will be a new western terminal, which may be adjacent to T5, and share its three underground stations. There are only two. Recent poorly-written articles about a "secret station" are in fact about extra as-yet-unused platforms at the heavy rail station. When it eventually opens, who knows whether it will be shown as a new GWR station or a pair of extra platforms at what is currently the HEx station? The GWR station may be gated, the HEx station isn't, as it's free to the central station. It's inevitable that it'll be just one station because there will be through trains (I don't think it's yet been decided if HEx or Crossrail would run the 2tph Paddington-Heathrow-Reading trains; very unlikely to be FGW or successor). Through trains will presumably use the current HEx platform pair. The currently unused platform pair could be used for a different service, perhaps to Staines and beyond. You can't have terminating and reversing trains using the same platform as though trains because the through trains will be right behind a terminating one and therefore considerably delayed. Why not? There could be a reversing siding to the east of the platforms. If you've never seen such a thing before, I suggest you look at Rayner's Lane, where there's a reversing siding fir Piccadilly Lone trains just behind the platforms used by Picc and Met line trains. |
Heathrow runway will create £16bn burden for TfL
Roland Perry wrote:
In message -septe mber.org, at 09:16:21 on Fri, 29 Apr 2016, Recliner remarked: If you only want to look at phase 1, fair enough. The analysis will have to be for the period from 1977 to 1986, when T4 opened. What was the rate of return, positive or negative, on the capital investments in the extended line, stations (two all-new and one re-built) and four extra trains, made over those ten years? I produced a figure of 7%, if you have a better one please explain your workings. Wasn't that based on a surplus of £2 per journey (ie, today's fares and traffic volumes) vs estimated construction costs in 1969 money? How about a calculation in 1985 money of the then operating surplus vs construction cost (incl four trains) of phase 1. Obviously the surplus should exceed the interest rates of the day, perhaps 20%. Also, strictly speaking, the incremental revenue should take into account that some of the airport traffic would previously have used Hounslow West station, and so wasn't new traffic at all. However, I've no idea how data like that can be obtained after so many years. |
Heathrow runway will create £16bn burden for
In message
-septe mber.org, at 18:53:01 on Sun, 1 May 2016, Recliner remarked: You can't have terminating and reversing trains using the same platform as though trains because the through trains will be right behind a terminating one and therefore considerably delayed. Why not? There could be a reversing siding to the east of the platforms. West, more likely. If you've never seen such a thing before, I suggest you look at Rayner's Lane, where there's a reversing siding fir Piccadilly Lone trains just behind the platforms used by Picc and Met line trains. I've seen it many times, but such sidings don't work for the sort of intensive services envisioned on CrossRail. -- Roland Perry |
Heathrow runway will create £16bn burden for TfL
In message
-sept ember.org, at 19:00:51 on Sun, 1 May 2016, Recliner remarked: I produced a figure of 7%, if you have a better one please explain your workings. Wasn't that based on a surplus of £2 per journey (ie, today's fares and traffic volumes) vs estimated construction costs in 1969 money? It was adjusted for inflation. -- Roland Perry |
Heathrow runway will create £16bn burden for
Roland Perry wrote:
In message -septe mber.org, at 18:53:01 on Sun, 1 May 2016, Recliner remarked: You can't have terminating and reversing trains using the same platform as though trains because the through trains will be right behind a terminating one and therefore considerably delayed. Why not? There could be a reversing siding to the east of the platforms. West, more likely. Yes, my mistake. If you've never seen such a thing before, I suggest you look at Rayner's Lane, where there's a reversing siding fir Piccadilly Lone trains just behind the platforms used by Picc and Met line trains. I've seen it many times, but such sidings don't work for the sort of intensive services envisioned on CrossRail. Well, it works perfectly well for the far more intensive Met+Picc service. The Crossrail reversers will be 2tph at T5, with 2tph through service. The Rayner's Lane service is at least three times as frequent at peak times. |
Heathrow runway will create £16bn burden for TfL
Roland Perry wrote:
In message -sept ember.org, at 19:00:51 on Sun, 1 May 2016, Recliner remarked: I produced a figure of 7%, if you have a better one please explain your workings. Wasn't that based on a surplus of £2 per journey (ie, today's fares and traffic volumes) vs estimated construction costs in 1969 money? It was adjusted for inflation. What about the cost of four more trains? And was it based on 1985 service levels and fares, or today's? And did you allow for 1980's interest rates on the capital costs? |
Heathrow runway will create £16bn burden for
In message
-sept ember.org, at 19:22:11 on Sun, 1 May 2016, Recliner remarked: If you've never seen such a thing before, I suggest you look at Rayner's Lane, where there's a reversing siding fir Piccadilly Lone trains just behind the platforms used by Picc and Met line trains. I've seen it many times, but such sidings don't work for the sort of intensive services envisioned on CrossRail. Well, it works perfectly well for the far more intensive Met+Picc service. The Crossrail reversers will be 2tph at T5, with 2tph through service. The Rayner's Lane service is at least three times as frequent at peak times. Don't they go all the way through to Uxbridge in the peaks? -- Roland Perry |
Heathrow runway will create £16bn burden for TfL
In message
-sept ember.org, at 19:22:12 on Sun, 1 May 2016, Recliner remarked: Roland Perry wrote: In message -sept ember.org, at 19:00:51 on Sun, 1 May 2016, Recliner remarked: I produced a figure of 7%, if you have a better one please explain your workings. Wasn't that based on a surplus of £2 per journey (ie, today's fares and traffic volumes) vs estimated construction costs in 1969 money? It was adjusted for inflation. What about the cost of four more trains? I didn't include them, but at £1.8m for four of them, it's getting into the noise level for the £26m total cost. And was it based on 1985 service levels and fares, or today's? Fares were adjusted for inflation, but used current passenger numbers. Back when the line was built all the passengers were going to T123, whereas with today's figures only about half of them are. Putting some numbers on it, Heathrow was handling 30m passengers when T4 was being built, and latest figures (2015) have T123 handling 32.6m [T4+T5 is 40.8m]. And did you allow for 1980's interest rates on the capital costs? I don't think they literally borrowed the money to build it, but they had the rate would have been the lowest government borrowing rate. -- Roland Perry |
Heathrow runway will create £16bn burden for
Roland Perry wrote:
In message -sept ember.org, at 19:22:11 on Sun, 1 May 2016, Recliner remarked: If you've never seen such a thing before, I suggest you look at Rayner's Lane, where there's a reversing siding fir Piccadilly Lone trains just behind the platforms used by Picc and Met line trains. I've seen it many times, but such sidings don't work for the sort of intensive services envisioned on CrossRail. Well, it works perfectly well for the far more intensive Met+Picc service. The Crossrail reversers will be 2tph at T5, with 2tph through service. The Rayner's Lane service is at least three times as frequent at peak times. Don't they go all the way through to Uxbridge in the peaks? No, only about half do. See my other post: "I just looked at the Rayner's Lane departure board, and in the next 15 minutes there will be six through trains (five Met, one Picc) and two terminators." |
Heathrow runway will create £16bn burden for TfL
Roland Perry wrote:
In message -sept ember.org, at 19:22:12 on Sun, 1 May 2016, Recliner remarked: Roland Perry wrote: In message -sept ember.org, at 19:00:51 on Sun, 1 May 2016, Recliner remarked: I produced a figure of 7%, if you have a better one please explain your workings. Wasn't that based on a surplus of £2 per journey (ie, today's fares and traffic volumes) vs estimated construction costs in 1969 money? It was adjusted for inflation. What about the cost of four more trains? I didn't include them, but at £1.8m for four of them, it's getting into the noise level for the £26m total cost. I think it best to use the figures Clove quoted: "Rails Through The Clay, which is usually pretty accurate on things, states that the original Heathrow extension was estimated at 15 million in 1970, with the final figure given as 30.2 million in 1978. Hounslow West to Hatton Cross civil engineering was 4 million. Tunnelling on to Heathrow Central was 2.25 million; the station was another 1.2 million (those three are all contract prices). The 1973 Tube Stock cost 40.25 million for 87.5 6-car trains. If I've calculated things correctly, the extension added 4 trains to the requirements for the line (15 minutes extra running time, 15 tph service at the time), so 1.84 million." So the capital cost was £33m (or a bit more, inflating the train costs from 1975 to 1978) in 1978 money. And was it based on 1985 service levels and fares, or today's? Fares were adjusted for inflation, but used current passenger numbers. Back when the line was built all the passengers were going to T123, whereas with today's figures only about half of them are. Putting some numbers on it, Heathrow was handling 30m passengers when T4 was being built, and latest figures (2015) have T123 handling 32.6m [T4+T5 is 40.8m]. So you need to reduce the volumes by about 10%, for the average in the 1977-1986 period? Also, I wonder how much of that traffic was simply displaced from Hounslow West, which previously provided the less-satisfactory Heathrow link? And did you allow for 1980's interest rates on the capital costs? I don't think they literally borrowed the money to build it, but they had the rate would have been the lowest government borrowing rate. I agree that they didn't directly borrow the money for this particular project, but it would have come from the public sector debt, one way or another. That means we need to use the gilt yields of the day, about 14%: http://www.tradingeconomics.com/unit...ent-bond-yield Of course, had it been a PFI contract, as might well have been the case today, the interest rate would have been significantly higher. So the cost of servicing the debt (let alone repaying any of it) would have been at least £4.6m pa. Only if the net incremental operating surplus exceeded this would you start to see any financial return on the investment. Obviously, with projects like this, there are other benefits (less pollution and traffic, quicker and more predictable journeys, etc), so even if it doesn't make a financial return, you might still do them, and I think that's the case here and in many other urban public transport schemes. |
Heathrow runway will create £16bn burden for
In message
-sept ember.org, at 08:27:47 on Mon, 2 May 2016, Recliner remarked: Don't they go all the way through to Uxbridge in the peaks? No, only about half do. See my other post: "I just looked at the Rayner's Lane departure board, and in the next 15 minutes there will be six through trains (five Met, one Picc) and two terminators." Are they running a weekday, or a Saturday, service? -- Roland Perry |
Heathrow runway will create £16bn burden for
Roland Perry wrote:
In message -sept ember.org, at 08:27:47 on Mon, 2 May 2016, Recliner remarked: Don't they go all the way through to Uxbridge in the peaks? No, only about half do. See my other post: "I just looked at the Rayner's Lane departure board, and in the next 15 minutes there will be six through trains (five Met, one Picc) and two terminators." Are they running a weekday, or a Saturday, service? I'm not sure. But, either way, it proves it can be done, and happens routinely. |
Heathrow runway will create £16bn burden for TfL
In message
-septem ber.org, at 08:45:48 on Mon, 2 May 2016, Recliner remarked: And was it based on 1985 service levels and fares, or today's? Fares were adjusted for inflation, but used current passenger numbers. Back when the line was built all the passengers were going to T123, whereas with today's figures only about half of them are. Putting some numbers on it, Heathrow was handling 30m passengers when T4 was being built, and latest figures (2015) have T123 handling 32.6m [T4+T5 is 40.8m]. So you need to reduce the volumes by about 10%, for the average in the 1977-1986 period? I wasn't going to bother estimating second order quantities. For example, I've ignored the passengers abstracted from the Piccadilly Line by HEx. Also, I wonder how much of that traffic was simply displaced from Hounslow West, which previously provided the less-satisfactory Heathrow link? That's accounted for by me using the very low figure of £2 extra fares (at today's prices) being put in the kitty. The rest of the fare goes towards funding Hounslow to Central London. Obviously, with projects like this, there are other benefits (less pollution and traffic, quicker and more predictable journeys, etc), so even if it doesn't make a financial return, you might still do them, and I think that's the case here and in many other urban public transport schemes. I was a bit surprised to discover that Atlanta's MARTA (bus and 'RER') was only one-third funded by the fares basket. -- Roland Perry |
Heathrow runway will create £16bn burden for
In message
-sept ember.org, at 09:11:07 on Mon, 2 May 2016, Recliner remarked: Don't they go all the way through to Uxbridge in the peaks? No, only about half do. See my other post: "I just looked at the Rayner's Lane departure board, and in the next 15 minutes there will be six through trains (five Met, one Picc) and two terminators." Are they running a weekday, or a Saturday, service? I'm not sure. But, either way, it proves it can be done, and happens routinely. One thing that's not been mentioned yet is that this Heathrow reversing siding would have to be newly constructed. Why do that when there's already a pair of platforms installed and ready for the through-running trains? -- Roland Perry |
Heathrow runway will create £16bn burden for TfL
Roland Perry wrote:
In message -septem ber.org, at 08:45:48 on Mon, 2 May 2016, Recliner remarked: And was it based on 1985 service levels and fares, or today's? Fares were adjusted for inflation, but used current passenger numbers. Back when the line was built all the passengers were going to T123, whereas with today's figures only about half of them are. Putting some numbers on it, Heathrow was handling 30m passengers when T4 was being built, and latest figures (2015) have T123 handling 32.6m [T4+T5 is 40.8m]. So you need to reduce the volumes by about 10%, for the average in the 1977-1986 period? I wasn't going to bother estimating second order quantities. For example, I've ignored the passengers abstracted from the Piccadilly Line by HEx. Very few, I suspect. Not many potential Tube pax would be prepared to pay HEx fares. Also, I wonder how much of that traffic was simply displaced from Hounslow West, which previously provided the less-satisfactory Heathrow link? That's accounted for by me using the very low figure of £2 extra fares (at today's prices) being put in the kitty. The rest of the fare goes towards funding Hounslow to Central London. You really need to compare fares and traffic in the 1977-1986 period with the 1977 investment. Obviously, with projects like this, there are other benefits (less pollution and traffic, quicker and more predictable journeys, etc), so even if it doesn't make a financial return, you might still do them, and I think that's the case here and in many other urban public transport schemes. I was a bit surprised to discover that Atlanta's MARTA (bus and 'RER') was only one-third funded by the fares basket. Not too different to LU's 40%, though I suppose you might expect the Americans to be less keen on subsidies. |
Heathrow runway will create £16bn burden for
Roland Perry wrote:
In message -sept ember.org, at 09:11:07 on Mon, 2 May 2016, Recliner remarked: Don't they go all the way through to Uxbridge in the peaks? No, only about half do. See my other post: "I just looked at the Rayner's Lane departure board, and in the next 15 minutes there will be six through trains (five Met, one Picc) and two terminators." Are they running a weekday, or a Saturday, service? I'm not sure. But, either way, it proves it can be done, and happens routinely. One thing that's not been mentioned yet is that this Heathrow reversing siding would have to be newly constructed. Why do that when there's already a pair of platforms installed and ready for the through-running trains? Well, the through lines also have to be constructed to the west, so building a reversing siding (or even a pair of sidings) between them at the same time would be trivial. Why would it affect the existing platforms? Note that the Piccadilly line already has reversing sidings beyond the platforms. And something else that hasn't been mentioned in this thread is that there have been regular calls for the Piccadilly line also to be extended to the west. |
Heathrow runway will create £16bn burden for
In message
-sept ember.org, at 10:02:23 on Mon, 2 May 2016, Recliner remarked: One thing that's not been mentioned yet is that this Heathrow reversing siding would have to be newly constructed. Why do that when there's already a pair of platforms installed and ready for the through-running trains? Well, the through lines also have to be constructed to the west, so building a reversing siding (or even a pair of sidings) between them at the same time would be trivial. I'll give you that one. -- Roland Perry |
Heathrow runway will create £16bn burden for TfL
In message
-sept ember.org, at 09:47:58 on Mon, 2 May 2016, Recliner remarked: And was it based on 1985 service levels and fares, or today's? Fares were adjusted for inflation, but used current passenger numbers. Back when the line was built all the passengers were going to T123, whereas with today's figures only about half of them are. Putting some numbers on it, Heathrow was handling 30m passengers when T4 was being built, and latest figures (2015) have T123 handling 32.6m [T4+T5 is 40.8m]. So you need to reduce the volumes by about 10%, for the average in the 1977-1986 period? I wasn't going to bother estimating second order quantities. For example, I've ignored the passengers abstracted from the Piccadilly Line by HEx. Very few, I suspect. Not many potential Tube pax would be prepared to pay HEx fares. HEx is there to abstract from the taxi trade, but there are still people who would pay HEx fare who previously wouldn't have paid taxi fares and thus would have used the tube. Also, I wonder how much of that traffic was simply displaced from Hounslow West, which previously provided the less-satisfactory Heathrow link? That's accounted for by me using the very low figure of £2 extra fares (at today's prices) being put in the kitty. The rest of the fare goes towards funding Hounslow to Central London. You really need to compare fares and traffic in the 1977-1986 period with the 1977 investment. All monies have been adjusted for inflation, and I'm not sure that T123 tube station is now that much busier than in the early 80's for the reasons I've given. Heathrow has always had a relatively high percentage of passengers using public transport - 34% in 1995 is one figure I've managed to find. And that report mentions 12 million passenger and 3 million staff using the Piccadilly Line. Compared to shade under 10m for T123+T4 today. -- Roland Perry |
Heathrow runway will create £16bn burden for
Roland Perry wrote:
In message -sept ember.org, at 08:27:47 on Mon, 2 May 2016, Recliner remarked: Don't they go all the way through to Uxbridge in the peaks? No, only about half do. See my other post: "I just looked at the Rayner's Lane departure board, and in the next 15 minutes there will be six through trains (five Met, one Picc) and two terminators." Are they running a weekday, or a Saturday, service? I think they must have been running a Saturday service yesterday. I just looked now, and there are ten trains due at Rayner's Lane in the next 15 minutes, of which two are terminators. The others are all going to Uxbridge (six Met, two Picc). The terminators are both followed by through trains only a minute or two behind. I assume the Met through trains will be waiting at the signal as the terminators go into the siding. It also confirms that Met trains have replaced Picc trains on the Uxbridge branch. It used to be closer to an equal service by both lines, now it's 75% Met beyond Ruislip. Looking at Acton Town westbound, in the next 15 minutes there are six Heathrow, one Northfields and three Rayner's Lane/Uxbridge trains. |
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