Reasonable Transit Pitches

The vehicle inventory is also a jaw-dropping document: http://www.transithistory.org/roster/

For one, it's updated in almost real-time. In fact, looks like it got updated this morning for some newly out-of-service commuter rail coaches. And then if you scroll way to the bottom on the "All-time Inventory" section it logs every single streetcar and heavy rail car that ran here since 1903, every trackless trolley and non-private bus ever, and every piece of commuter rail equipment since the years the MBTA bought all northside and southside assets. Including the last year each vehicle ran, modifications done to them during their lifespan, and where any surviving specimens went after retirement.
 
The vehicle inventory is also a jaw-dropping document: http://www.transithistory.org/roster/

For one, it's updated in almost real-time. In fact, looks like it got updated this morning for some newly out-of-service commuter rail coaches. And then if you scroll way to the bottom on the "All-time Inventory" section it logs every single streetcar and heavy rail car that ran here since 1903, every trackless trolley and non-private bus ever, and every piece of commuter rail equipment since the years the MBTA bought all northside and southside assets. Including the last year each vehicle ran, modifications done to them during their lifespan, and where any surviving specimens went after retirement.

Is it still a mystery who updates it and how it's so accurate?
 
Is it still a mystery who updates it and how it's so accurate?

I'm guessing it's a T employee or employees who has access to every department's daily roster logs sent in to HQ. That stuff has to get collected centrally somewhere, since otherwise it's quite the impressive feat to have insta-updates for 15 years straight from the main bus shops, Boston Engine Terminal, and all 4 subway line home bases all at once purely on tips from co-workers.

The page is popular enough that I'm sure T management straight up to the GM approves of it, so long as the internal source remains anonymous. Hell...read through enough in theirs and MassDOT's document libraries and you'll see the roster page and Belcher's compendium footnoted in all kinds of official agency publications. They aren't going to screw up a good thing when they themselves are reliant on it as a peer-reviewed reference source. I know Pesaturo's referenced it before in answering reporter queries, so he probably has it bookmarked right at the top of his browser window.
 
Little aside, since you bring up the near-live updated roster:
What's going on here with bus 1206? Full album here. These seats look much lighter than the existing seats and give the feel of slightly more room.

mSpzZNF.jpg


Back on topic - Re: 1+77 super route

Just make it a BRT route with mostly physically separated lane from Dudley to Arlington Center. Realistically, BTD Commish Tinlin seems to be getting enough pressure from champions of other modes, even from his more junior BostonBikes head Nicole Freedman, that maybe we could see more metered discourse about improving surface routes in Boston. Walsh seems to be on board about transportation issues, but I'm not sure if he's ready to reengage the 'balanced transportation' conversation that inevitably gets turned into 'The Mighty and Unjust War on Cars' by the loudest voices who seem to drown out or even gain sympathy from the transit-riding public.
 
Tinlin's no longer Commish. Jim Gillooly is acting head.

Although, he might actually be more open to the idea. But that's not saying much.
 
Tinlin's no longer Commish. Jim Gillooly is acting head.

Although, he might actually be more open to the idea. But that's not saying much.

Ah! Yes, sorry. I've been somewhat out of the loop due to possible job transition. I'm very interested to see what comes out of the transition committee.
 
Those seats aren't a bad idea, but they ought to be subway style, IE facing the aisle, especially on the Silver Line, especially if they plan to continue marketing it as rapid transit (which it never was). Forward facing seats take up too much space and cause too much congestion by standees. CTA's 60' articulated buses have this seating arrangement and can easily fit at least a third more passengers all while making boarding, alighting and moving about the bus by passengers much easier.
 
How expensive (ballpark) would it be to replace every inch of track (including the 3rd rail) on the Red, Orange and Blue lines as well as replace every signal system wide?
 
This pitch is about a reorganization for planning and operating purposes. It's reasonable technically, but would qualify as a crazy pitch, politically:

Set up an agency with funding from all New England States to run a system that is somewhere in-between Commuter Rail and Intercity Rail. This system, which I'll call New England Rail Road (NERR), would be in charge of operating and/or planning for the following services:
  • All Providence-Boston service that does not continue beyond, say, Bridgeport:
    • RIPTA would operate, and plan, Providence based commuter rail, going south through Wickford Junction and beyond, and north to Pawtucket and potentially even Mansfield. Also RIPTA would plan and/or operate any Woonsocket service.
    • MBTA would operate any short turns on the current Providence Line (Mansfield, Attleboro) and any Stoughton runs.
    • NERR would operate any trains that stop in both Providence and Boston. These include just plain Providence-Boston runs, as well as plan for, and eventually operate, any longer runs (say to Connecticut or whatever).
    • Amtrak would continue to operate Northeast Regionals and Acela Expresses
  • Any Hartford-Boston service (maybe via Springfield, maybe over the Next-Gen Amtrak ROW, which will never happen)
  • All Springfield-Worcester-Boston service:
    • MBTA would operate any short turns that don't go to Worcester (Framingham, etc.)
    • NERR would operate, and/or plan for, Worcester-Boston runs, Springfield-Boston runs, etc.
    • Amtrak would continue to operate Lake Shore Limiteds
  • CapeFlyer
  • New Hampshire Capital Corridor
  • Downeaster
  • South Coast Rail
  • Maybe Fitchburg runs (not counting short turns)
  • Projects connecting non-Boston New England cities, i.e. New-Haven-Hartford-Springfield, Central Corridor Rail Line, etc.

This enables the Commuter Rail system to focus on shorter, more frequent, services within the Boston area. The NERR can operate and plan for, what are essentially intercity rail lines.
 
This pitch is about a reorganization for planning and operating purposes. It's reasonable technically, but would qualify as a crazy pitch, politically:

Set up an agency with funding from all New England States to run a system that is somewhere in-between Commuter Rail and Intercity Rail. This system, which I'll call New England Rail Road (NERR), would be in charge of operating and/or planning for the following services:
  • All Providence-Boston service that does not continue beyond, say, Bridgeport:
    • RIPTA would operate, and plan, Providence based commuter rail, going south through Wickford Junction and beyond, and north to Pawtucket and potentially even Mansfield. Also RIPTA would plan and/or operate any Woonsocket service.
    • MBTA would operate any short turns on the current Providence Line (Mansfield, Attleboro) and any Stoughton runs.
    • NERR would operate any trains that stop in both Providence and Boston. These include just plain Providence-Boston runs, as well as plan for, and eventually operate, any longer runs (say to Connecticut or whatever).
    • Amtrak would continue to operate Northeast Regionals and Acela Expresses
  • Any Hartford-Boston service (maybe via Springfield, maybe over the Next-Gen Amtrak ROW, which will never happen)
  • All Springfield-Worcester-Boston service:
    • MBTA would operate any short turns that don't go to Worcester (Framingham, etc.)
    • NERR would operate, and/or plan for, Worcester-Boston runs, Springfield-Boston runs, etc.
    • Amtrak would continue to operate Lake Shore Limiteds
  • CapeFlyer
  • New Hampshire Capital Corridor
  • Downeaster
  • South Coast Rail
  • Maybe Fitchburg runs (not counting short turns)
  • Projects connecting non-Boston New England cities, i.e. New-Haven-Hartford-Springfield, Central Corridor Rail Line, etc.

This enables the Commuter Rail system to focus on shorter, more frequent, services within the Boston area. The NERR can operate and plan for, what are essentially intercity rail lines.

This seems like a solution in search of a problem that doesn't exist.

-- Commuter rail has upper limits for how long the trip can be before comfort level becomes a factor. Those seats were not designed for >90 minute rides. And at 2-hour trips you really need to start considering food service, which is Amtrak's #1 loss leader expense but also a veritable necessity for most of the routes they run. There's a reason why commuter rail districts have boundaries, even in the middle of states like Metro North vs. Shore Line East and NHHS.

-- There's a demarcation point where it gets harder and harder to provide local commuter rail service the more super-duper conjoined runs you have to dispatch at >50 miles from the terminal. For example, it's actually going to start costing the T Providence Line growth slots in the future the more their schedules get predicated on making large numbers of end runs stretching past Providence/Green to Wickford Jct. and Kingston. That's why RIDOT's instate service isn't all a conjoined super-run with the Providence Line. Neither service could ever run often enough being dispatched >100 miles in one shot. And ultimately when the instate service is up to saturation running the T is going to have to cull back the Providence Line schedule and not run past Green more than a couple times a day.

-- It likewise gets harder and harder to supply equipment to run both local commuter rail and long distance regional rail out of the same facility. Doing so out of Boston with overlapping service everywhere and stuff departing hours on end 100 miles out of town is hard. There would have to be seas of purple cars eminent domaining every inch of Widett Circle, filling up Beacon Park, and grabbing every inch of Readville space to support Connecticut runs. And all of that's going to be crimping capacity into South Station moving into position. The CR mode was never designed for kitchen-sink overlap of everything from subway service to Amtrak. Amtrak doesn't have to have a huge storage yard every 100 miles because they don't run 27 local routes in addition to the long distances. Southampton Yard, New Haven, NYC Sunnyside Yard, D.C. Union, Albany: the entire East Coast intercity network runs out of just those places.


Different modes for different purposes. You can only blur the lines so much between what's commuter rail and what's intercity before you end up with neither and a system way, way too hard to administer.



As for the destinations:

-- There is very little market for Boston-Springfield or anywhere Boston-Connecticut. Those places do not have a natural jobs orientation to Boston. They're the kind of work trips you take once in awhile to visit a different corporate office or catch a flight out of Logan instead of Bradley. In other words, Amtrak-type trips.

-- Amtrak Regional service to New Haven and Bridgeport is already so frequent there is no way thru-running commuter rail can top those frequencies for the capacity reasons listed above. Shoreline regional travel truly is a non-issue.

-- We're already scraping up against the outer limits of a Boston-Rhode Island commuter market. Wickford Jct. is an instate-RI growth prospect and is always going to have long odds of having more than a few riders stay all the way to Boston. It's 1:45 on the clock...past the "ass hurts and I'm hungry" comfort level achievable on a commuter rail coach. Even if/when our equipment hits 90 MPH on the NEC that's not going to bend back any closer than 90 minutes. So T.F. Green is the effective outer limits of the Boston commute, with Wickford and Kingston peanuts not worth doing more than 3 or 4 times a day and Westerly out of the question.

-- We don't have to change anything as far as RI and NH are concerned, because the subsidy agreements with those states are elastic enough to lean on the T for all their instate needs...including the ones that don't run thru to Boston. So bureaucratically there's nothing to do here. And in fact those states have an easier time getting their 'ins' to commuter rail siphoning off the T.

-- Likewise, out-of-MBTA-district runs can return the favor. The Knowledge Corridor is ideally served by Massachusetts chucking in subsidy to CTDOT to run mixed NHHS commuter rail service patterns north of Springfield to Greenfield. If VTTrans wants to get something in its own state going we can subsidize them to run south of Brattleboro to Springfield. But all 3 states don't need to be conjoined because Hartford isn't a commute destination for Brattleboro, or vice versa. More Vermonter frequencies serve that need for daytrip business trips.

-- There really aren't many more places the T needs to expand to. See the service area: http://www.mbta.com/uploadedfiles/A...sals_2012/Map of MBTA Service District(1).pdf. This is just for commuter rail; the bus district gives way to the Regional Transit Authorities at Route 128. Cape and South Coast are pretty much it other than spot infills such as: Dunstable for the Lowell-Nashua extension, Blackstone and Millville for a Franklin Line extension to Blackstone-Woonsocket, Berlin and Clinton if the Northboro/I-290 branch off the Worcester Line were built. The density cavity on the western outskirts of the district and 90-min. "ass hurts/I'm hungry" threshold draw practical borders that aren't worth stretching.

-- Connecticut? Portland, ME? There's no need to lard them on because those are far greater than 90 min. trip times ill-suited for commuter rail and perfectly suited for nicely frequent Amtraks. Substantial expansion of state-sponsored Amtrak service is the answer. Including Boston-Montreal to bring Eastern MA and Vermont much closer, lots more Downeasters, lots more Inlands. Amtrak does this very well. Reorganizing their state-sponsored services under a murky regional umbrella without clear purpose is quite likely to harm the quality of service on these routes. Not to mention pass up a whole ton of federal funding.





I think the alphabet soup works plenty well if each agency got the requisite funding. The interstate cooperation is much better than it was and all the New England state (well...maybe not NH) are very much on the same page about their local, regional, national, and international rail visions. We're ahead of the rest of the country on this.

Things to work on are fare interoperability. This has already been a boon on the bus side with the RTA's in Massachusetts all moving to Charlie Cards. We desperately need to get commuter rail similarly compatible, because then you can probably port Charlie over to RIPTA and link those buses to all of RI's T-run rail transfers.

From there you can sort of morph like EZ-Pass did into the proverbial babel fish transit pass that talks to ALL the states' fare collection systems. One card usable on any city bus in MA, on RIPTA, on CT Transit; on any commuter train be it T/RIDOT, Shore Line East, Metro North, NHHS/Knowledge Corridor, VTTrans. One card for paying for parking in any commuter lot in any state.


That pretty much does it. You don't need the satisfaction of having it all run under one acronym or one logo or one color scheme when all the abstraction is removed from the customer. Pull into lot or take bus...swipe card. Train pulls up...swipe card. Anywhere. That's what EZPass did...it didn't marry the NYS Thruway Authority to the Mass Turnpike Authority, etc. etc. It just make paying road tolls totally transparent in every state along the eastern seaboard. There's no reason why all manner of public transit can't work the same.
 
Thanks for the write-up. I agree with most, if not all, of what you wrote. The problem I was trying to solve was the discomfort of long-distance commuter tips, and the trouble that the MBTA and Amtrak are in. I was hoping these trains would resemble intercity trains more than commuter trains, but I see the dispatching issues from Boston. So this raises a question I was hoping to address:

Should those services have equipment that are more suited for intercity trips (I mean Boston-Rhode Island, Boston-Worcester, Boston-Fitchburg, CapeFlyers)? If so, could that still be operated as Commuter Rail, or something different?
 
And at 2-hour trips you really need to start considering food service, which is Amtrak's #1 loss leader expense but also a veritable necessity for most of the routes they run.

Just to pick on this one point, this is something that has kind of driven me nuts for a while. As someone who travels between NYC-Bos a lot, I would love to be able to take the train, the only thing is that it is just too outrageously expensive. If train travel was more affordable, you would bring a ton of ridership off of the buses, because even tho travel time is roughly the same, I'm sure people would rather spend the time on a train that's moving then a bus stuck in traffic. I don't expect the trains to hit fung wah levels of price, but if the round trip cost were less than $100 I think they would see a huge increase in ridership.

And as you mentioned, the cafe car is huge loss for amtrak, and my argument is, during a 4 hour trip, do you really need a cafe car? If you can't manage 4 hrs without food provided, bring your own snack, or eat at SS before you leave. Nix the cafe car and add another car of revenue generating seats. At least that's my opinion. The northeast regional should be more affordable to the general population, and the accella can be reserved for those requiring a bit more comfort.
 
Thanks for the write-up. I agree with most, if not all, of what you wrote. The problem I was trying to solve was the discomfort of long-distance commuter tips, and the trouble that the MBTA and Amtrak are in. I was hoping these trains would resemble intercity trains more than commuter trains, but I see the dispatching issues from Boston. So this raises a question I was hoping to address:

Should those services have equipment that are more suited for intercity trips (I mean Boston-Rhode Island, Boston-Worcester, Boston-Fitchburg, CapeFlyers)? If so, could that still be operated as Commuter Rail, or something different?

Well, again...that's kind of a solution in search of a problem. Amtrak has vehicles designed for comfort at distances >100 miles. Commuter rail vehicles with seating density designed to be crowd-swallowers at <50 miles. The way the demand for service breaks out, things already neatly sort throughout New England to one or the other with no real tough calls.

-- Worcester and Fitchburg are the western extents of the population density before hitting the giant cavity out to Springfield and Amherst. So the demand is adequately served by frequent state-sponsored Amtrak and not some halfway-to-CR frequency.

-- Rhode Island's limits for the Boston commute are starting to define themselves around T.F. Green, and too many super-extended Providence Line runs are kind of moot because of the dispatching dance.

-- Southeast inland NH and Maine demand falls to the Downeaster side of the frequencies. Even when Haverhill commuter rail ran to Dover until 1965 it was a very limited rush-hour only schedule with all else turning at Haverhill. I doubt you'd find any CR demand past Durham today, and it would likewise be more limited demand than the full-blast Haverhill/Plaistow turns. The commuter demand drops off in that less-populated part of suburban NH before the 90-min. pain threshold comes into play, much like it does in RI past Green.

-- Concord commuter rail was always intended to be an express run stopping in MA only at Lowell and Anderson to keep under that 90-minute pain threshold and manage the seating demands. All-stops locals were never ever proposed to go past Nashua. The 2 wholly separate schedules are a practical necessity; they'd need to run 12-car all bi-levels on the Lowell Line to fit all the rush hour passengers from 4 major regional cities on one trip.

-- As mentioned, the only CT commuter affinity to Massachusetts is up the Knowledge Corridor to Greenfield, and the only VT commuter affinity to MA down the Knowledge Corridor to Springfield. < 90 minute trips, no need for the cushy seats or food service. CT's commuter rail affinity to RI stops at Westerly; Shore Line East gets almost no patronage trying to cross the density cavity to Kingston.

-- Cape Cod is getting ever-improved track speeds. If Buzzards Bay gets full commuter rail, it'll only take +15 minutes extra over the 58 min. Middleboro local to get there. Hyannis will eventually slip under 2 hours, since distance-wise it's no further from Boston than Wickford. Full-blown commuter rail there may only require terminating the locals at BB and having the Hyannis trips skip a few of the lesser Middleboro intermediates (Campello, Montello, the inside-128 stops, etc.) to lock it under the 90 minute threshold. You won't need a different class of service. It didn't need a different class of service the last time Hyannis had full, well-patronized commuter rail in 1958. For intercity...the Amtrak Cape Codder was quite popular on its D.C.-NYC-Providence-Cape weekender run until budget cuts messed up the schedule. There's enormous potential for bringing that one back on upgraded track and a much faster NEC trip than it last had in '96 pre-electrification.



Don't really see a problem. New England travel distances and commute affinities just happen to be serendipitously well-separated enough that there aren't any real 'tweener cases forcing a dilemma about classes of service. It's pretty clear-cut what's in commuter rail's realm, what's in state-sponsored Amtrak's realm, and where service increases in both realms address the needs.
 
And as you mentioned, the cafe car is huge loss for amtrak, and my argument is, during a 4 hour trip, do you really need a cafe car? If you can't manage 4 hrs without food provided, bring your own snack, or eat at SS before you leave. Nix the cafe car and add another car of revenue generating seats. At least that's my opinion. The northeast regional should be more affordable to the general population, and the accella can be reserved for those requiring a bit more comfort.

The cafe car is a money loser because Amtrak is clueless about running it... maybe it should be replaced with mostly seats and some vending machines. Or get a contractor in there who knows how to run a food service without bleeding money.

I agree that the upwards trending prices are annoying. But, in general, the high prices are due to high popularity of the service. They are filling seats even at $50-$70-$100 1-way. They need to add more trains but that's not an option at the moment, AFAIK. They're working on it. Inlands at least will dodge the annoying moveable bridge problem in CT.

Also, there's some obscure law which prevents Amtrak from offering steep discount deals -- for example on the less popular runs -- which would help them compete with the buses. Blame is on some micro-management from an idiotic congress critter.
 
Just to pick on this one point, this is something that has kind of driven me nuts for a while. As someone who travels between NYC-Bos a lot, I would love to be able to take the train, the only thing is that it is just too outrageously expensive. If train travel was more affordable, you would bring a ton of ridership off of the buses, because even tho travel time is roughly the same, I'm sure people would rather spend the time on a train that's moving then a bus stuck in traffic. I don't expect the trains to hit fung wah levels of price, but if the round trip cost were less than $100 I think they would see a huge increase in ridership.

And as you mentioned, the cafe car is huge loss for amtrak, and my argument is, during a 4 hour trip, do you really need a cafe car? If you can't manage 4 hrs without food provided, bring your own snack, or eat at SS before you leave. Nix the cafe car and add another car of revenue generating seats. At least that's my opinion. The northeast regional should be more affordable to the general population, and the accella can be reserved for those requiring a bit more comfort.

It's almost certainly a loss leader. Meaning there is a tangible benefit beyond the simple profit/loss of the individual cafe car. Perhaps not necessary on the NEC which supplies it's own demand (hence the outrageous prices), but on other routes it could be the difference between someone riding the train or not. I know the Vermonter used to be (or still is?) quite the party train, as is the Downeaster on game nights. I for one enjoy getting loaded on the way down to NYC, especially if I'm going out once there.

As for how Amtrak manages to not run the cafes at a profit... bad buisness. You have a captive audience for multiple hours. It's either bad branding, bad service, bad food, or a combination. The fact that they cant even break even is nuts. A personal idea of mine would be to licence out the cafes individually to food truck operators. They manage to turn a profit in similarly sized space, and it could be neat draw.
 
As for how Amtrak manages to not run the cafes at a profit... bad buisness. You have a captive audience for multiple hours. It's either bad branding, bad service, bad food, or a combination. The fact that they cant even break even is nuts. A personal idea of mine would be to licence out the cafes individually to food truck operators. They manage to turn a profit in similarly sized space, and it could be neat draw.

It's bad food. The cafe cars aren't equipped to really prepare anything - you've got a microwave, you've got refrigeration, you've got storage space, that's all you've got. The Acela does a little better because it has a sous vide machine for at least the comped first class meals but I don't know if business class gets anything better than the regional does in terms of options for food prep.

Bad food is a correctable problem (and the comped first class meals are at least suggestive of Amtrak being capable of rising above the level of microwaved nuke-and-puke frozen pizzas if given the means and motivation to actually prepare food), that's the good news. The bad news is that it requires gutting the cafe car and installing a griddle or some other variety of cooking implement above and beyond the microwave - the sort of overhaul that probably rises to the level of "things we're going to get to when we finally have the capital to start talking Amfleet III Coach / Viewliner Lounge Car acquisition" and so my advice to prospective cafe car diners will continue to be "eat before boarding, buy drinks on the train, don't touch anything on the food menu that's not the bagged chips."

As for the service... they tried licensing out the Empire Service cafe cars to Subway about a decade ago. I can't go digging up the relevant files because I'm on my phone at the moment, but suffice it to say that the whole thing was brought down by the union and some legal back and forth. I somehow very much doubt that food truck operators are going to get past the union if Subway couldn't.
 
I'm working on a modified version of the MBTA 2024 proposal and I have some questions:

  • How feasible/unfeasible would it be for a set of four DMUs to leave downtown and then split later on, en route, two going one direction, two in the other direction? (Splitting at a station.) And how hard to recombine on an inbound trip? (Assume the scheduling works out that they can both be at the right place at the same time.) The logic behind this is to combine two trains into a single dispatching slot on the crowded approaches into downtown. Likewise, how would the feasibility change if a pair of DMUs were to split from/combine with a conventional push-pull commuter rail train?
  • What's the upper limit on spacing of all trains on those approaches into Boston? Can you have trains five minutes apart? Three minutes? Two? (Yes, including all Amtrak, commuter rail and Indigo-ish service.)
  • Is there any data out there on the pros and cons of higher-frequency (though not necessarily higher capacity) commuter rail/DMU service to Needham (via Roslindale)? Was this ever studied? Are there any analogues out there from which we might inferences?
  • It's generally thought to be unfeasible to run trains from the Midland Branch and Old Colony Lines over to the B&A via the Cove Loop, due to the number of tracks that have to be crossed before reaching Back Bay. But how difficult would it be to run trains across the Cove Loop, destined for the Southwest Corridor? Particularly if they are eventually bound for Needham (taking some slots that Needham Line commuter rail trains currently take)?
 
[*]What's the upper limit on spacing of all trains on those approaches into Boston? Can you have trains five minutes apart? Three minutes? Two? (Yes, including all Amtrak, commuter rail and Indigo-ish service.)
[*]Is there any data out there on the pros and cons of higher-frequency (though not necessarily higher capacity) commuter rail/DMU service to Needham (via Roslindale)? Was this ever studied? Are there any analogues out there from which we might inferences?
[/LIST]

I can address these two - F-Line or someone else can take a crack at the others...

Caltrain ran some computer simulations back in 2010 when they were proposing EMU service interspersed with HSR and other passenger rail near San Francisco. Their primary concern was efficiency not safety (and thus entirely specific to their network), and they came up with approximately 3.25 minutes of separation. If you simply run the physics, a commuter train (from an NTSB incident report test in 2006) took on the order of 45 seconds to stop from 74mph, so really anything efficient will be safe from a technical standpoint. The FRA's regulatory issues had to do with what happens after impact, not whether the impact takes place.

Higher frequency service to Needham may have been studied, but not DMU service. Prior to the Track 61 business, DMUs have basically only been studied on the Fairmount - the Allston Multimodal Study from 2009 discusses shorter DMU stations but doesn't really go into operations.
 
I can address these two - F-Line or someone else can take a crack at the others...

Caltrain ran some computer simulations back in 2010 when they were proposing EMU service interspersed with HSR and other passenger rail near San Francisco. Their primary concern was efficiency not safety (and thus entirely specific to their network), and they came up with approximately 3.25 minutes of separation. If you simply run the physics, a commuter train (from an NTSB incident report test in 2006) took on the order of 45 seconds to stop from 74mph, so really anything efficient will be safe from a technical standpoint. The FRA's regulatory issues had to do with what happens after impact, not whether the impact takes place.

Higher frequency service to Needham may have been studied, but not DMU service. Prior to the Track 61 business, DMUs have basically only been studied on the Fairmount - the Allston Multimodal Study from 2009 discusses shorter DMU stations but doesn't really go into operations.

Wow! That's fascinating about Caltrain. What was meant by "efficient"? Like, the flexibility of the system to deal with delays?

Re Needham service: it need not be DMU service, per se, to be useful data for my purposes. Even just a study on increased commuter rail service would be useful.

Hmm, just thought of something: the PMT analyzed Orange Line to 128 via Roslindale... I assume they were analyzing 7-min-peak, 10-min-off-peak headways (or something on that order), but I wonder if that analysis would give any sense of potential ridership within Roslindale and West Roxbury for 10-min-peak, 20-min-off-peak service.
 
Wow! That's fascinating about Caltrain. What was meant by "efficient"? Like, the flexibility of the system to deal with delays?

Re Needham service: it need not be DMU service, per se, to be useful data for my purposes. Even just a study on increased commuter rail service would be useful.

Hmm, just thought of something: the PMT analyzed Orange Line to 128 via Roslindale... I assume they were analyzing 7-min-peak, 10-min-off-peak headways (or something on that order), but I wonder if that analysis would give any sense of potential ridership within Roslindale and West Roxbury for 10-min-peak, 20-min-off-peak service.

If memory serves, I think you got it pretty much right. It was about absorbing realistic delays. Here's the report:

http://www.caltrain.com/Assets/Calt...alifornia+HSR+Blended+Operations+Analysis.pdf

As far as commuter rail frequency studies are concerned, you'll need to ask F-Line. I believe that what he will tell you is that Needham is such a low priority into SS that it will be sqeezed out of existence by NEC service as it is, so higher-frequency service would be a wasted study with any vehicles. The future of Needham is in GL/OL conversion, not enhanced CR.
 

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