Just to be clearer, the intent of the thread was to apply to all overnight or longer duration LD passenger trains and not sub-categorize them. There is usually only one LD train per route each way.
The situation would be common to any LD service with multiple trains a day; many routes with âone trainâ actually have to account for two if there is bidirectional service on the same segment the same day, and the need to establish a âwindowâ for each of them to run at passenger speed is there regardless of direction.
It might be just coincidence that I never encounter these over regimented PSR dispatchers you might have encountered on your trips possibly? I donât think I have been on an Amtrak train yet that was restricted to less than 79 mph because it missed a slot.
Iâm going specifically by some of the material in the docket for the suits against carrier railroads for âdelayingâ Amtrak service. Whether an Amtrak train is âheldâ for opposing slow trains or to open up a âhigher-speedâ window for it to move is immaterial to overall train delay, and obviously thatâs a frequently-expressed concern.
I also go by operations as I saw them through Douglasville, Georgia around the turn of the century: traffic would be held in both directions until Amtrak came through (at track speed of ~79mph) and then trains would be âfleetedâ behind it at what would be expedient freight speed; I think the most I saw was five, on no more than 5 to 10 minutesâ headway. This would seem logical for ârealâ PSR where train movements are conducted sensibly to optimize fluidity on a single-track line (and there is adequate facility capacity to yard the following trains).
It also demonstrated (to me) an understanding that Amtrak trains were âmandatedâ to run both with no delay due to facing trains, and with no speed restrictions due to following slower traffic. To accomplish that, dispatch would need to keep a slot âreservedâ and be cognizant of how train length in both directions might affect ability of freights to take siding. It seems to me that true PSR would be able to âknowâ the standing and stretched train lengths to facilitate the process, and I think it appears from the Justice Department proceedings that it is by far the easiest response affected carrier railroads might engage in.
If it happens it is for an hour or two because perhaps another train was allowed to proceed and then the train recovers or passes the train in front of it âŚit is not usually for the remainder of the route.
âYes, butâŚâ it appears from the record that there may be multiple trains needing to pass, or trains that wonât fit in unimproved sidings (note that this not only implies Amtrakâs âshorterâ consist needing to take siding, but also precludes ability to run around slower trains).
I might not have been clear before in my past responses but on a train traveling from say Dallas to St. Louis, you can arrive on time in Little Rock (I donât think many care at Little Rock due to the time the train arrives/departs) and you can be on time in St. Louis but you can be late at the intermediate points in between.
I think that is more due to including fixed dwell at major stops (this used to be due to baggage and mail/express handling) I am sure Amtrak currently treats much of the dwell as 'padding. The implication that has to be made here is â if the intermediate passengers donât care about arrival promptness, as you say â the train simply be allowed to proceed âlateâ so long as it reasonably deprts the major stop On Time.
The argument for flag stops reducing operating cost remains, and I think it may be substantial. Something in another thread indicated the cost of an older MKT train as involving from 75 to 150 gallons of fuel oil, and corresponding water, for each stop and re-acceleration. Obviously this would be less extreme for modern diesel-electric locomotives, but it stands to reason that on particular sections, and in bad weather, the cumulative cost would be meaningful.
The flag stop approach would be to recover the lost time without exceeding the speed limit between those two points by skipping intermediate points where there might not be passengers.
IIt will certainly allow makeup of âlost timeâ, as I said; the issue is and was only whether one or more âarrivalsâ at a flagstop location would be âin advance of the advertisedâ.
I also might point out the number of scheduled stops on a LD train route where there is little or no patronage day to day. So for example my favorite example on the Texas Eagle route is Hope, Arkansas (which I would refer to as a political stop more than a practical stop). I think it was 1200 passengers a year or something miniscule but it does not even come out to 1 passenger a train or I seem to hit that station when nobody gets on or off the train.
Hope (which I think is starting to lose the political importance it had in the âClinton yearsâ) is a perfectly good example. This is on the high-speed ex-MoPac line, and thereâs no point in stopping there if there is no one to detrain or get on. On the other hand, if there IS someone â even the likely sort of activist that will come out of the woodwork to make the train stop more often than objective traffic would warrant â who wants to use the station, you have to allow for a stop âand all that that impliesâ. And you canât pass Hope early⌠there might be someone expecting they can just arrive and get on.
R
eally do not see the issue with arriving at a train station early with passengers waiting if you know shortly after they board you have all the passengers on board, what is exactly stopping the train from departing that train station earlier than scheduled?
Thatâs a fair point, and in a world where you MUST have paid for your âtransportationâ before boarding (iow no ticket sales on the train, even at additional cost) you could easily determine running schedule from ongoing ticket sales with only a couple of minutesâ latency. On the other hand, you now introduce the question about people who have confirmed reservations, but are not at the station by the time the train actually gets there. They may very well be assuming that because they have their documentation ready, thay can get there only a minute or two before train time and just clamber aboard.
You cannot presume it will throw off PSR because in most cases the routes traveled by Amtrak are not high density freight lines the whole LD route 24 by 7. In order to throw off PSR the track capacity has to be used up or fairly full of freight trains.
Note that with various kinds of fake PSR, everything gets optimized around the cheapest possible operating paradigm. If Amtrak trains could be restricted to notch-5-restricted speed and CBTC were properly implemented (which it surely should have been as part of implementing the PTC mandate) there would be little issue; in fact it would be possible to fleet one or more priority freights close behind a given Amtrak train and have them use the following interval to minimize cost and dwell during required flag stops. The problem with that is the same as on any one-speed railroad⌠and to get something faster to run around your scheduling will be best achieved if you reserve the appropriate track time, and then stretch that âwindowâ as Amtrak may be late entering it.
I noticed on UP on high density areas they are not so high density during some days of the year like sayâŚholidays or times of economic slow down. So even in highly traffic density areas the flagstop approach would probably not even impact PSR during some days of the calendar.
Where there is excess track capacity, the ability for Amtrak trains to get off a given segment of track âmore quicklyâ is a bit circumstantial. It is nonetheless an important consideration even for fake-PSR-crazed railroads. The argument here is entirely one of perceived customer service, and indeed Amtrak (which has fuggled so much else in customer relations!) need do no more than Greyhound in âsolvingâ it by (1) requiring advance ticketing as you indicated, and (2) requiring riders to be physically at the station and âchecked inâ by half an hour (or more) before scheduled train time. Were I running Amtrak, I might in fact implement such a policy just for the CYA it affords against people complaining about missed trains (I suspect, as you do, that there are actually not very many).
There is the further implication (in your method) that the passengers detraining at the âlaterâ flagstops would see shorter and shorter travel times, and this implies that even operation well ahead of âtimetableâ would not inconvenience them. A version of this was in the aforementioned name trains that stopped âonly to receiveâ or âdischargeâ passengers at secondary or suburban locations like Englewood, IL or Rosemont PAâŚ
I see the increased use of flagstops as increasing flexibility of getting the Amtrak train over the railroad route. I am still not seeing where exactly it is decreasing flexibility or causing a huge problem, even with PSR.
Succinctly: absent a policy like Greyhoundâs (which I believe you yourself have criticized) you cannot run a train âearlyâ past any given flagstop location without potentially causing some person to miss the train. (And given that Amtrak considers its sole purpose to provide âtransportationâ â not on-time or rapid transportation â that possibility alone might be anathema.) That is really the only functional objection to the idea, and in the great majority of LD cases I think it would be benefitial, if not actually advisable, to make the necessary operating changes to permit it.