Category: New York
Timetable Padding Practices
Two weeks ago, the Wall Street Journal wrote this piece about our Northeast Corridor report. Much of it was based on a series of interviews William Boston did with me, explaining what the main needs on the corridor are. One element stands out since the MTA responded to what I was saying about schedule padding – I talk about how Amtrak and Metro-North both pad the timetables on the Northeast Corridor by about 25%, turning a technical travel time of an hour into 1:15 (best practices are 7%), and in response, the MTA said that they pad their schedules 10% and not 7%. This is an incorrect understanding of timetable padding, which speaks poorly to the competence of the schedule planners and managers at Metro-North.
The article says,
Aaron Donovan, a spokesman for the Metropolitan Transportation Authority, says the extra time built into Metro-North schedules generally averages 10%, depending on destination and length of trips, and takes into account routine track maintenance and capital work that can increase runtime. Metro-North continually reviews models, signal timing, equipment, and other elements of operation to improve travel times and reliability for customers, he says.
This is, to be clear, incorrect. Metro-North routinely recovers longer delays than 10%; delay recovery on the New Haven Line can reach well over 20 minutes out of a nominally two-hour trip, around 25% of the unpadded trip length. The reason this is incorrect isn’t that Donovan is dishonest or incompetent (he is neither of these two things), but almost certainly that the planners he spoke with genuinely believe they only pad 10%, because they, like all American railroaders, do not know how modern rail scheduling is done.
Modern rail scheduling practices in the higher-reliability parts of Europe and Japan start with the technical timetable, based on the actual speed zones and trains’ performance characteristics. This includes temporary speed restrictions. The ideal maintenance regime does not use them, instead relying on regular nighttime maintenance windows during which all tracks are out of service. However, temporary restrictions may exist if a line is taken out of service and trains are rerouted along a slower route, which is regrettably common in Germany. Modern signaling systems are capable of incorporating temporary speed restrictions – this is in fact a core requirement for American positive train control (PTC), since American maintenance practices rely on extensive temporary restrictions for work zones and one-off slowdowns. If the signal system knows the exact speed zones on each section of track, then so can the schedule planners.
The schedule contingency figure is computed relative to the best technical schedule. It is not computed relative to any assumption of additional delays due to dispatch holds or train congestion. The 7% figure used in Switzerland, Sweden, and the Netherlands takes care of the high levels of congestion on key urban segments.
The core urban networks in these countries stack favorably with Metro-North in track utilization. The Hirschengraben Tunnel in Zurich runs 18 S-Bahn trains per hour in each direction most of the day and 20 at rush hour with some extra S20 runs, and the Weinberg Tunnel runs 8 S-Bahn trains per hour and if I understand the network graphic right 7.5 additional intercities per hour. I urge people to go look at the graphic and try tracking down the lines just to see how extensively branched and reverse-branched they are; this is not a simple network, and delays would propagate. The reason the Swiss rail network is so punctual is that, unlike American rail planning, it integrates infrastructure and timetable development. This means many things, but what is relevant here is that it analyzes where delays originate and how they propagate, and focuses investments on these sections, grade-separating problematic flat junctions if possible and adding pocket tracks if not.
Were I to only take timetable padding into account relative to an already more tolerant schedule incorporating congestion and signaling limitations, I would cite much lower figures for timetable padding. Switzerland speaks of a uniform 7% pad, but in Sweden the figures include two components, a percentage (taking care of, among other things, suboptimal driver behavior) and a fixed number of minutes per 100 km, which at current intercity speeds resolve to 7% as in Switzerland. But relative to the technical trip time, the pad factors based on both observed timetable recovery and actual calculations on current speed zones are in the 20-30% range, and not 10%.
Of course, at no point do I suggest that Metro-North and Amtrak could achieve 7% right now, through just writing more aggressive timetables. To achieve Swiss, Dutch, and Swedish results, they would need Swiss, Dutch, or Swedish planning quality, which is sorely lacking at both railroads. They would need to write better timetables – not just more aggressive ones but also simpler ones: Metro-North’s 13 different stopping patterns on New Haven Line trains out of 16 main line peak trains per hour should be consolidated to 2. This is key to the plan – the only way Northern Europe makes anything work is with fairly rigid clockface timetables, so that one hour or half-hour is repeated all day, and conflicts can be localized to be at the same place every time.
Then they would need to invest based on reliability. Right now, the investment plans do not incorporate the timetable, and one generally forward-thinking planner found it odd that the NEC report included both high-level infrastructure proposals and proposed timetables to the minute. In the United States, that’s not the normal practice – high-level plans only discuss high-level issues, and scheduling is considered a low-level issue to be done only after the concrete is completed. In Northern European countries with competently-run railways and also in Germany, the integration of the timetable and infrastructure is so complete that draft network graphics indicating complete timetables of every train to the minute are included in the proposal phase, before funding is committed. In Switzerland, such a timetable is available before the associated infrastructure investments go to referendum.
Under current American planning, the priorities for Metro-North are in situ bridge replacements in Connecticut because their maintenance costs are high even by Metro-North’s already very expensive standards. But under good planning, the priority must be grade-separating Shell Interlocking (CP 216) just south of New Rochelle, currently a flat junction between trains bound for Grand Central and ones bound for Penn Station. The flat junctions to the branches in Connecticut need to be evaluated for grade-separation as well, and I believe the innermost, to the New Canaan Branch, needs to be grade-separated due to its high traffic while the ones to the two farther out branches can be kept flat.
None of this is free, but all of this is cheap by the standards of what the MTA is already spending on Penn Station Access for Metro-North. The rewards are substantial: 1:17 trip times from New Haven to Grand Central making off-peak express stops, down from 2 hours today. The big ask isn’t money – the entire point of the report is to figure out how to build high-speed rail on a tight budget. Rather, the big ask is changing the entire planning paradigm of intercity and commuter rail in the United States from reactive to proactive, from incremental to comfortable with groun-up redesigns, from stuck in the 1950s to ready for the transportation needs of the 21st century.
Second Avenue Subway Phase 2 Station Design is Incompetent
A few hours ago, the MTA presented on the latest of Second Avenue Subway Phase 2. The presentation includes information about the engineering and construction of the three stations – 106th, 116th, and 125th Streets. The new designs are not good, and the design of 116th in particular betrays severe incompetence about how modern subway stations are built: the station is fairly shallow, but has a mezzanine under the tracks, with all access to or from the station requiring elevator-only access to the mezzanine.
What was in the presentation?
Here is a selection of slides, describing station construction. 106th Street is to be built cut-and-cover; 116th is to use preexisting construction but avoid cut-and-cover to reach them from the top and instead mine access from the bottom; 125th is to be built deep-level, with 125′ deep (38 m) platforms, underneath its namesake street between Lexington and Park Avenues.










The problems with 116th Street
Elevator-only access
Elevator-only access is usually stupid. It’s especially stupid when it’s at a shallow station; as the page 19 slide above shows, the platforms are about 11.5 meters below ground, which is an easy depth for both stair and escalator access.
Now, to be clear, there are elevator-only stations built in countries with reasonable subway construction programs. Sofia on Nya Tunnelbanan is elevator-only, because it is 100 meters below street level, due to the difficult topography of Södermalm and Central Stockholm, in which Sofia, 26 meters above sea level, is right next to Riddarfjärden, 23 meters deep. Emergency access is provided via ramps to the sea-level freeway hugging the north shore of Södermalm, used to construct the mined cavern in the first place. Likewise, the Barcelona L9 construction program, by far the most expensive in Spain and yet far cheaper than in any recent English-speaking country, has elevator-only access to the deep stations, in order to avoid any construction outside a horizontal or vertical tunnel boring machine.
The depth excuse does not exist in East Harlem. 11.5 meters is not an elevator-only access depth. It’s a stair access depth with elevators for wheelchair accessibility. Stairs are planned to be provided only for emergency access, without public usage. Under NFPA 130 the stairs are going to have to have enough capacity for full trains, much more than is going to be required in ordinary service, and they’d lead passengers to the same street as the elevators, nothing like the freeway egress of Sofia.
Below-platform mezzanines
To avoid any shallow construction, the mezzanines will be built below the platforms and not above them. As a result, access to the station means going down a level and then going back up to the platform level. In effect, the station is going to behave as a rather deep station as far as passenger access time to the platforms is concerned: the planned depth is 57′, or 17.4 meters, which means that the total vertical change from street level is around 23.5 meters, twice the actual depth of the platforms.
Dig volume
Even with the reuse of existing infrastructure, the station is planned to have too much space north and south of the platforms, as seen with the locations of the ancillary buildings.
I think that this is due to designs from the 2000s, when the plan was to build all stations with extensive back-of-the-house space on both sides of the platform. Phase 1 was built this way, as we cover in our New York case, and after we yelled at the MTA about it, it eventually shrank the footprint of the stations. 116th’s station start and end are four blocks apart, a total of about 300 meters, comparable to 86th Street; the platform is 186 m wide and the station overall has no reason to be longer than 190-200. But it’s possible the locations of the ancillary buildings were fixed from before the change, in which case the incompetence is not of the current leadership but of previous leadership.
Why?
On Bluesky, I’m seeing multiple activists I think well of assume that this is because the MTA is under pressure to either cut costs or avoid adverse community impact. Neither of these explanations makes much sense in context. 106th Street is planned to be built cut-and-cover, in the same neighborhood as 116th, with the same street width, which rules out the community opposition explanation. Cut-and-cover is cheaper than alternatives, which also rules out the cost explanation.
Rather, what’s going on is that MTA leadership does not know how a modern cut-and-cover subway station looks like. American construction prefers to avoid cut-and-cover even for stations, and over time such stations have been laden with things that American transit managers think are must-haves (like those back-of-the-house spaces) and that competent transit managers know they don’t need to build. They may want to build cut-and-cover, as at 106th, but as soon as there’s a snag, they revert to form and look for alternatives. They complain about utility relocation costs, which are clearly not blocking this method at 106th, and which did not prevent Phase 1’s 96th Street from costing about 2/3 as much as 86th and 72nd per cubic meter dug.
Under pressure to cut costs and shrink the station footprint, the MTA panicked and came up with the best solution the political appointees, that is to say Janno Lieber and Jamie Torres-Springer and their staff, and the permanent staff that they deign to listen to, could do. Unfortunately for New York, their best is not good enough. They don’t know how to build good stations – there are no longer any standardized designs for this that they trust, and the people who know how to do this speak English with an accent and don’t earn enough to command the respect of people on a senior American political appointee’s salary. So they improvise under pressure, and their instincts, both at doing things themselves and at supervising consultants, are not good. To Londoners, Andy Byford is a workhorse senior civil servant, with many like him, and the same is true in other large European cities with large subway systems. But to Americans, the such a civil servant is a unicorn to the point that people came to call him Train Daddy, because this is what he’s being compared with.
The Danbury Branch and Rail Modernization
I’ve been asked to talk about how rail modernization programs, like the high-speed rail plan we published at Marron this month, affect the Danbury Branch of the New Haven Line. The proposal barely talks about branch modernization beyond saying that the branches should be electrified; we didn’t have time to write precise branch timetables, which means that the timetable I’m going to post here is going to have more rounding artifacts. The good news is that modernization can be done cheaply, piggybacking on required work on the main of the New Haven Line.
Current conditions
The Danbury Branch is a 38 km single-track unelectrified line, connecting South Norwalk with Danbury making six additional intermediate stops. All stations have high platforms, but they are short, ranging between three and six cars.
Ridership is essentially unidirectional: toward Norwalk and New York in the morning, back north in the afternoon. There is little job concentration near the stations. Within 1 km of Danbury there are only 5,000 jobs per OnTheMap, rising to 10,000 if we include Danbury Hospital, which is barely outside the station’s 1 km radius (but is not easily walkable from it). Merritt 7 is in an office park, but there are only 6,000 jobs there, and nearly everyone drives. The other stations are parking lots, and Bethel is somewhat outside the town center for better parking.
The right-of-way is very curvy, much more so than the main line. Where most of the New Haven Line is built to a standard of 2° curves (radius 873 m), permitting 157 km/h with modern cant and cant deficiency, the Danbury Branch scarcely has a section straight enough with gentler curves than 3°, and much of it has such frequent 4° curves that trains cannot go faster than 100 km/h except for speedups of a few seconds at a time to recover delays.
A first pass on infrastructure and operations
It is effectively free to electrify a 38 km single-track line. The high-speed rail report estimates it at $75 million based on both European electrification costs (see report for sources) and the Southern Transcon proposal, which is $2 million/km on a busy double-track line. The junction between the branch and the main line is flat, but outbound trains can be timetabled to avoid conflict, and inbound trains have no at-grade conflict to begin with. If platform lengthening is desired, then it is a noticeable extra expense; figure $30 million for each eight-car platform, or perhaps half that on single track (but then some stops are double-track), maybe with some pro-rating for existing platforms if they can be easily reused.
The tracks should also be maintained to higher speed, which is a routine application of a track laying machine, with some weekend closures for construction followed by what should be an uninterrupted multidecade period of operations. The curves are already superelevated to a maximum of 5-6″; this is less than the 7″ maximum in US law (180 mm here), but the difference is not massive. The line has a 50 mph speed limit today for the most part, whereas it can be boosted to about 100-110 km/h depending on section, a smaller difference than taking the main line’s 70 mph and turning it into 150-160 km/h.
With a blanket speed limit of 110 km/h – in truth some sections need to dip down to 100 or even less whereas the Bethel-Danbury and Merritt 7-Wilton interstations can be done mostly at 130 – the trip time between South Norwalk and Danbury is, inclusive of 7% pad, 28.75 minutes. The Northeast Corridor report timetables have express New Haven Line commuter trains arriving South Norwalk southbound at :15.25 every 20 minutes and departing northbound at :14.75, so they’d be departing Danbury at :46.5 and arriving :43.5. Meets would occur at the :20, :30, and :40 points.
The :30 point, important as it is a meet even if service is reduced to every 30 minutes, is just south of Branchville, likely too far to use the existing meet at the station. Thus, at first pass, some additional double-tracking is needed, a total of 6 km if it covers the entire Cannondale-Branchville interstation, which would cost around $50 million at MBTA Franklin Line costs. MBTA Franklin Line costs are likely an underestimate, since the terrain on the Cannondale-Branchville interstation is hillier and some additional earthworks would be required on part of the section. A high-end estimate should be the cost of a high-speed rail line without elevated or tunneled segments, around $30 million/km or even less (cut-and-fill isn’t needed as much when the line curves with the topography), say $150 million.
The :20 point southbound is at or just south of Bethel. While this is in a built-up area, the right-of-way looks wide enough for two tracks and the topography is easier; if the station is the meet, then the cost is effectively zero, bundled into a platform lengthening project. Potentially, this could even be further bundled with moving the station slightly south to be closer to the town center. The :40 point southbound is at Merritt 7, which has room for a second track but not necessarily for a platform at it, and could instead get a second track on the opposite side of the platform if there’s enough of a rebuild to turn it into an island with additional vertical circulation; the cost of the second track itself would be a rounding error but the cost of station reconstruction would not be and would likely be in the mid-tens of millions.
How this fits into the broader system
The timetable in the report already assumes that New Haven Line service comprises 6 peak trains per hour (tph) that use the branches. The default assumption, reproduced in the service network graphic, is that New Canaan and Danbury get 3 tph each, and New Canaan gets a grade-separated junction but Danbury does not. Those trains all go to Grand Central with no through-running: only the local trains on the New Haven Line get to run through, since local trains are the highest priority for through-running. If a tunnel connecting the Gateway tunnel with Grand Central is opened, as in some long-term plans (here’s ETA’s, which isn’t very different from past blog posts’), then they can run through to it.
The establishment of this service is not going to, by itself, change the characteristic of ridership on the line. Electrification, better timetabling, and better rolling stock (in this order) can reduce the trip time from an hour today to 29 minutes, and the trip time to Grand Central from about 2:25 to 1:09, but the main effect would be to greatly improve the connectivity of existing users, who’d be driving to the parking lot stations more often, perhaps working from the office more and from home less, or taking the train to social events in the city. Some would opt to use the train to get to work at Stamford, as a secondary market. Over time, I expect that people would buy in the area to commute to work in New York (or at Stamford), but housing permit rates in Fairfield County are low and only limited TOD is likely. It would take concerted commercial TOD at the stations to produce reverse-peak ridership, likely starting with expanding the Merritt 7 office park and making it a bit less auto-oriented.
If the ridership isn’t there, then a train every 20 minutes is not warranted and only a train every 30 minutes should be provided. This reduces the double-track infrastructure requirement but only marginally, as the meets that are no longer needed are the easy ones and the one that still is is the hard one to build, south of Branchville. In effect, something like 80% of the cost provides two thirds of the capacity; this is common to rail projects, in that small cuts in an already optimized budget lead to much larger cuts in benefits, the opposite of what one hopes to achieve when optimizing cuts.
The Problems of not Killing Penn Expansion and of Tariffs
Penn Station Expansion is a useless project. This is not news; the idea was suspicious from the start, and since then we’ve done layers of simulation, most recently of train-platform-mezzanine passenger flow. However, what is news is that the Trump administration is aiming to take over Penn Reconstruction (a separate, also bad project) from the MTA, in what looks like the usual agency turf battles, except now given a partisan spin. I doubt there’s going to be any money for Reconstruction (budgeted at $7 billion), let alone expansion (budgeted at $17 billion), and overall this looks like the usual promises that nobody intends to act upon. The problem is that this project is still lurking in the background, waiting for someone insane enough to say what not a lot of people think but few are willing to openly disagree with and find some new source of money to redirect there. And oddly, this makes me think of tariffs.
The commonality is that free trade is not just good, but is more or less an unmixed blessing. In public transport rolling stock procurement, the costs of tariffs are so high that a single job created in the 2010s cost $1 million over 4-6 years, paying $20/hour. In infrastructure, in theory most costs are local and so it shouldn’t matter, but in practice some materials need to be imported, and when they run into trade barriers, they mess entire construction schedules. Boston’s ability to upgrade commuter rail stations with high platform was completely lost due to successive tightening of the Buy America waiver process under Trump and then Biden, to the point that even materials that were just not made in America (steel, FRP) could not be imported. The problem is that nobody was willing to say this out loud, and instead politicians chose to interfere with bids to get some photo-ops, getting trains that are overpriced and fail to meet schedule and quality standards.
Thus, the American turn away from free trade, starting with Trump’s 2016 campaign. During the Obama-Trump transition, the FTA stopped processing Buy America waivers, as a kind of preemptive obedience to something that was never written into the law, which includes several grounds for waivers. During the Trump-Biden transition, the standards were tightened, and waivers required the approval of a political office at the White House, which practiced a hostile environment, hence the above example of the MBTA’s platform problems. Now there are general tariffs, at a rate that changes frequently with little justification. The entire saga, especially in the transit industry, is a textbook example not just of comparative advantage, but of the point John Williamson made in the original Washington Consensus that trade barriers were a net negative to the country that imposes them even if there’s no retaliation, purely from the negative effects on transparency and government cleanliness. This occurred even though tariffs were not favored in the political elite of the United States, or even in the general public; but nobody would speak out except special interests and populists who favored trade barriers.
And Penn Expansion looks the same. It’s an Amtrak turf game, which NJ Transit and the MTA are indifferent to. NJ Transit’s investment plan is not bad and focuses on actual track-level improvements on the surface. The MTA has a lot of problems, including the desire for Penn Reconstruction, but Penn Expansion is not among them. The sentiments I’m getting when I talk to people in that milieu is that nobody really thinks it’s going to happen, and as a result most people don’t think it’s important to shoot down what is still a priority for Amtrak managers who don’t know any better.
The problem is that when the explicit argument isn’t made, the political system gets the message that Penn Expansion is not necessarily bad, but now is not the time for it. It will not invest in alternatives. (On tariffs, the alternative is to repeal Buy America.) It will not cancel the ongoing design work, but merely prolong it by demanding more studies, more possibilities for adding new tracks (seven? 12? Any number in between?). It will insist that any bounty of money it gets go toward more incremental work on this project, and not on actually useful alternatives for what to do with $17 billion.
This can go on for a while until some colossally incompetent populist of the type that can get elected mayor or governor in New York, or perhaps president, decides to make it a priority. Then it can happen, and $17 billion plus future escalation would be completely wasted, and further investment in the system would suffer because everyone would plainly see that $17 billion buys next to nothing in New York so what’s the point in spending a mere $300 million here and there on a surface junction? If it were important then Amtrak would have prioritized that, no? Even people who get on some level that the agencies are bad with money will believe them on technical matters like scheduling and cost estimation over outsiders, in the same manner that LIRR riders think the LIRR is incompetent and also has nothing to learn from outsiders.
The way forward is to be more formal about throwing away bad ideas. Does Penn Expansion have any transportation value? No. So cancel it. Drop it from the list of Northeast Corridor projects, cancel all further design work, and spend about 5 orders of magnitude less money on timetabling trains at Penn Station within its existing footprint. Don’t let it lurk in the background until someone stupid enough decides to fund it; New York is rather good lately at finding stupid people and elevating them to positions of power. And learn to make affirmative arguments for this rather than the usual “it will just never happen” handwringing.
New York Mayoral Race Thrown Wide Open as Cuomo is Prosecuted, Adams Removed
The June 24th Democratic primary for mayor of New York City has been thrown wide open as both the incumbent mayor Eric Adams and the frontrunner, former governor Andrew Cuomo, have been dealt serious blows. State prosecutors announced an indictment of Cuomo on multiple charges including sexual assault and corruption stemming from his response to the coronavirus pandemic in 2020. Shortly after the indictments were handed, Governor Kathy Hochul announced that in light of the corruption charges against the mayor, she would exercise her gubernatorial prereogative to suspend him for 30 days, and unless new exculpatory evidence came to light would remove him subsequently. The winner of the June primary, she said, will then be appointed as interim mayor until an election can be held.
The governor’s power to remove local officials, including mayors, has not been used since 1932, when governor and president-elect Franklin D. Roosevelt removed New York City Mayor Jimmy Walker following a corruption trial in which he served as prosecutor, judge, and jury. However, it remains part of the state constitution, and is not limited by the judiciary. Political operatives speculate that Hochul refrained from using this power against Adams partly because it had been so rarely used in the past but also partly to avoid empowering the wrong figures. With the new indictments against the former governor, it is speculated that the removal of Adams is intended to send a message to Cuomo that he’s a target as well should he become mayor.
Political figures in the city who have endorsed Cuomo in the primary express shock. A federally elected Democrat says that with Cuomo gone, there is a real risk of the anti-Israel Zohran Mamdani winning, and moderates and liberals should unite around a pro-Israel candidate, who the source did not yet name. The Brooklyn Democratic Party organization released a statement attacking Hochul for interfering with the election and saying that Cuomo’s handling of the pandemic was exemplary.
The remaining candidates in the primary who have made statements by the time this article has gone to press all reacted positively but reservedly. The two who have been running the deepest in the recent polls are Mamdani and City Comptroller Brad Lander, and who have so far refrained from responding to the shifting situation by attacking each other, both focusing on saying that Cuomo and Adams are not appropriate for leading New York.
Quick Note: Report on Electrification and Medium-Speed Rail Upgrades
Nolan Hicks has wrapped up nearly a year of work at Marron on a proposal called Momentum, to upgrade mainline rail in the United States with electrification, high platforms, and additional tracks where needed, short of high-speed rail. The aim is to build low- or perhaps medium-speed rail; the proposed trip times are New York-Albany in 2:05 (averaging 109 km/h) and New York-Buffalo in 5:38 to 5:46 (averaging 123 km/h). The concept is supposed to be used US-wide, but the greatest focus is on New York State, where the plan devotes a section to Network West, that is New York-Buffalo, and another to Network East, that is the LIRR, in anticipation of the upcoming state budget debate.
The costs of this plan are high. Nolan projects $33-35.6 billion for New York-Buffalo, entirely on existing track. The reasoning is that his cost estimation is based on looking at comparable American projects, and there aren’t a lot of such upgrades in the US, so he’s forced to use the few that do exist. A second track on single-track line is costed cheaply with references to various existing projects (in Michigan, Massachusetts, etc.), but third and fourth tracks on a double-track line like the Water Level Route are costed at $30 million/km, based on a proposal in the built-up area of Chicago to Michigan City.
In effect, the benefits are a good way of seeing what upgrades to best American industry practices would do. The idea, as with the costing, is to justify everything with current or past American plans, and the sections on the history of studies looking at electrification projects are indispensable. This covers both intercity and regional rail upgrades, and we’ve used some of the numbers in the drafts at ETA to argue, as Nolan does, against third rail extensions and in favor of catenary on the LIRR and Metro-North.
(Update 4-3: and now the full proposal is out, see here.)
Open BRT
BRT, or bus rapid transit, can be done in one of two ways: closed and open. Closed systems imitate rail lines, in that there is a BRT route along the entire length of the corridor; open ones instead take a trunk route, upgrade it with dedicated lanes and other BRT features, and let routes run through from it to branches that are not so equipped, perhaps because there is less traffic on the branches. I complained 14 years ago that New York City Transit was planning closed BRT in the form of SBS on Hylan Boulevard on Staten Island, a good route for open BRT. Well, now the MTA is planning BRT on the disused North Shore Branch of the Staten Island Railway, arguing that it is better than reactivating rail service because buses could use it as an open corridor – except that this is a poor corridor for open BRT. This leads to the question: which corridors are good for open BRT to begin with?
Trunks and branches are good
Open BRT can be analogized to a Stadtbahn system, fast in the core and slow outside it. Like a Stadtbahn, it works best where several branches can converge onto a single route, where the high traffic both requires higher capacity and justifies higher investment; just as grade separation increases the throughput of a rail line, BRT treatments increase those of a bus through greater separation from other traffic and regularity of service.
Unlike a Stadtbahn, open BRT remains a bus. This means two things:
- The trunk route must itself be a strong surface route. It had better be a wide street with room for physically separated bus lanes, or else a city center route that could be turned into a transit mall. A Stadtbahn system puts the fast central portion underground and could do it independently of the street network, or even run under a slow narrow street like Tremont Street in Boston.
- The connections from the trunk route to the branches must themselves be strong bus links. If the bus needs to zigzag on narrow residential streets to get between two wider arterials, then it will be unreliable and slow even if one of the wider arterials gets dedicated lanes. A Stadtbahn system can tunnel a few hundred meters here and there to ensure the onramps are adequate, but a surface bus system cannot, not without driving its cost structure to that of a subway but with few of the benefits of underground running.
The North Shore Branch could pass a modified version of criterion 1, but fails criterion 2. In general, former rail lines are bad for such BRT systems, since the street network was never set up for such connections. In contrast, street networks with a central artery and streets of intermediate importance between it and residential side streets emanating from it, which were never used for grade-separated rail lines, are more ideal for this treatment.
Grids are bad
Street grids eliminate the branch hierarchy of traditional street networks. There is still a hierarchy of more and less important grid streets – in Manhattan, the avenues and two-way streets are wider and more used for traffic than the one-way streets – but there is little branching. Bus networks can still branch if they move between streets, which happens in Manhattan, but it’s not usually a good idea: Barcelona’s Nova Xarxa uses the grid to run mostly independent bus routes, each route mostly sticking to a grid arterial, and the extent of branching on the Brooklyn, Queens, and Bronx bus networks is limited to a handful of short segments like the Washington Bridge.
In situations like this, open BRT would not work. Hylan is possibly the only route in New York that has any business running open BRT. For this reason, our Brooklyn bus redesign proposal, and any work we could do for Queens, Manhattan, or the Bronx, eschews the open BRT concept. The buses are upgraded systemwide, since features like off-board fare collection and wider stop spacing are not really special BRT features but are rather normal in, for example, the urban German-speaking world. Center bus lanes are provided wherever there is need and room. There is more identification of a bus route with the street it runs on, but it isn’t really closed BRT, which is a series of treatments giving the BRT routes dedicated fleets and stations, for example with left-side doors to board from metro-style island platforms like Transmilenio.
What this means more broadly is that the open BRT is not a good fit for most of North America, with its grid routes. Occasionally, a diagonal street could act as a trunk if available, but this is uncommon. Broadway is famous for running diagonally to the Manhattan grid, but that’s not a BRT route but a subway route.
Public Transportation and Crime are not About Each Other
Noah Smith is trying to make public transportation and YIMBYism about crime, and I don’t think he succeeds. In short, he says that transit cities and higher housing growth levels would be more publicly acceptable if American central cities were more sensitive to conservative concerns about crime. In effect, he is making public transportation investment not a matter of frequency or network design or reliability or good maintenance or transit priority on streets or low construction costs or any of the other technocratic issues that distinguish the Seouls and Zurichs and Stockholms of the world from the Los Angeleses (which, to give credit, he acknowledges are important), but about crime, conceived as a culture war issue about more police and more police visibility. And in this, he ends up ignoring both the literature on this and what makes good government tick in parts of the developed world that are not the United States.
Now, Noah is a pundit, who’s more pro-transit than the average in his milieu. He’s not the reason American cities are poorly governed or the separate suite of reasons American public transit is so bad and isn’t improving. He writes as a way of trying to engage conservative NIMBYs, I just don’t think he succeeds – and the way he fails is for many of the same reasons American public transit managers fails. Chief of those is American triumphalism, of the kind that will retweet a viral tweet that pretends Europe has no biotech or advanced physics and that uses the expression “europoor” unironically in a flamewar. People who fail to recognize how Europe and East Asia work are not going to be able to learn what works here and how to adapt it; I’m less familiar with Asian discourse, but Noah’s description of Europe is unrecognizable. Even the basic thesis about urbanism and crime isn’t correct in a global perspective. This leads to serious problems in diagnosing how European cities got to have the housing and transportation policies that they do; the solutions are, by the black-and-white polarization of American politics, best thought of as a blue-and-orange spectrum, starting with lack of local empowerment and inattention to neighborhood-scale stereotypes
Cities and crime
The American association between high crime rates and deurbanization is not at all normal. Globally, it’s the exact opposite; Gaviria-Goldwyn-Galarza-Angel find that high risk of violence leads to higher urban density, because of the effect of safety in numbers. Simon Gaviria roots this in the history of his own country, Colombia. In Latin America, crime rates are infamously high. Noah’s post compares the American homicide rate with a selection of European and Asian countries, topping at 6.8/100,000 in Russia (US: 5.8), but in Colombia it is 25.7, and in the 1990s it ranged between 60 and 85. People can’t suburbanize the way they have in the United States, even with a GDP per capita in line with that of midcentury America, because, in a sufficiently high-crime environment, driving to work means taking the risk of being carjacked at an intersection.
Now, public transportation in Latin America is not especially good, not by European or East Asian standards. Most cities haven’t built much recently; Mexico City deserves especial demerits, but Brazil has been flagging as well, and Argentina has no money for anything. Chile and the Dominican Republic are both expanding metros, Santiago doing so rather rapidly, and both have the same order of magnitude of homicide as the US (Chile: 4.5, Dominican Republic: 11.5), rather than that of Colombia or Brazil or Mexico. But this still does not make high crime a relevant factor in deurbanization.
Now, in the history of the United States, people do associate postwar suburbanization with high crime rates. While the crime rate rose rapidly in the 1960s, and remained high until the 1990s, there was little transportation risk. The stereotype of poverty-induced social disorder as seen from a car in an American city, at least in the 1990s and 2000s, was a panhandler coming to the car at a traffic jam with a squeegee, washing it, and expecting payment; jacking was (and still is) more or less unheard of. The stereotype was, safety on the road and in the suburbs, danger in the city. But that is a feature of relatively moderate crime rates. Indeed, the destruction of American public transit in the middle of the 20th century and the suburbanization of the middle class and aspirants both came before the increase in crime rates; two thirds of the fall in New York subway ridership from its twin peaks in 1930 and 1946 to its nadir in 1982 had occurred by 1960, on the eve of the explosion in the city’s homicide rate.
And to be clear, this is a matter of stereotypes, more than reality. New York is one of the safest large cities in the United States (4.7/100,000 in 2023). San Francisco is even safer: in 2024 through December 10th, the pro-rated homicide rate was 4.3. Texan urbanists outside Austin (4.7) have to contend with higher homicide rates: 15.7 in Dallas, 12.8 in Houston, 8.4 in San Antonio, all averaged over the first six months of 2024 and pro-rated. But Dallas and Houston are perceived as far safer than New York. This can’t exactly be racism – these two cities are nearly as black as New York and considerably more Hispanic. But whatever is causing the stereotype needs to be separated from the reality; the Texan rail advocates I talk to on social media don’t treat crime as a major obstacle for finding more money for public transit, and instead cite car culture, low perceived value of rail, and high costs, and if that’s not a problem there, it shouldn’t be in New York or San Francisco.
Stereotypes in Paris
Noah talks about how Europe succeeded in curbing crime rates – and to again give credit, recognizes that New York is safe – and says that this is driving greater acceptance of public transportation and housing growth here.
Except, this isn’t quite right. I don’t have comparable surveys asking people if they find Paris safe, but I do have access to French discourse at hand, and it does not at all say “Paris is safe, people who think crime is a problem there are idiots,” except maybe when an American is in the room and then the point is to pull rank on the American.
In Paris, in French, there are lists of sensitive city quarters, and there are arrondissements that are more fashionable than others. The 18th, 19th, and 20th are usually negatively stereotyped, if less so than the adjacent department, Seine-Saint-Denis, which is extremely negatively stereotyped. The 13th is negatively stereotyped, but this is likely to be missed by Americans – the population there is disproportionately Asian, and negative stereotypes of Asians by white people are worse in France than in the United States. Belleville, straddling the 10th/11th/19th/20th boundary, was listed as a sensitive quarter when I lived just outside its limits and went in frequently to buy tahini – and at the time, I saw either British or American media, I forget which, list these quarters as no-go zones.
Now, these are residential areas. The center of Paris is well to the west of these. But Paris has a low job density gradient within city limits between commercial areas (like the 1st or the 8th) and residential ones, and the Ministry of the Interior, for example, is located in the 20th, close to Nation. People commute to these neighborhoods, usually by the Métro or RER. Nation, at the 11th/12th/20th boundary, is a mixed zone, with features that connote middle-class consumption (like the farmer’s market) and others that connote poverty (like a Resto du Cœur; see citywide map here). The sort of people in France who see a black or Arab person on the street and immediately panic find the area dangerous, including at one point the minister of the interior himself, who professed to being shocked at seeing ethnic food at the supermarket.
And none of this matters to public transportation investment, or to housing. In a country where people treat the entire department of Seine-Saint-Denis as a no-go zone except for football games at the Stade de France, where the RER B has such a negative reputation for passing through this area that two different airport connectors are planned to parallel it, Grand Paris Express is still planned to make stops in Seine-Saint-Denis, and connect it better with the rest of the region, including the wealthy suburbs around La Défense. This was a bipartisan decision – there were differences between the Socialists’ and the Gaullists’ ideas of what exactly to build, but there was core agreement on a circumferential line through the inner suburbs, and it is considered a social policy to connect working-class suburbia with jobs.
Stereotypes and local empowerment
The stereotypes of crime in parts of the Paris region do not affect urban rail investment plans. Where they do matter is at the level that doesn’t matter: the local one. Anne Hidalgo is a committed leftist (and NIMBY), but centrist and center-right politicians in the region have long wanted an urban renewal project around Gare du Nord, which they consider a poor area, not because it’s especially poor, but because it’s where the commuter trains from Seine-Saint-Denis go and thus young black and Arab men congregate there, and the station’s facilities could genuinely use some modernization. Occasionally the negative stereotypes of the station even get to British media. But whether Paris engages in a wholesale renewal project around the station to make it more upscale is not going to matter in the grand scheme of things to either its public transport ridership or its overall level of housing production.
The difference between Paris and New York or San Francisco is not that it has lower crime, although its homicide rate is certainly lower. It’s that it doesn’t derail its social policy discourse by turning technocratic issues into culture wars. Paris has unstaffed sanisettes; in a handful of areas there’s drug use, seen as used syringes. San Francisco, like Paris, has a handful of areas with drugs in its sanisettes, but the moral panic got to the point that the city decided to staff all sanisettes 24/7, with two attendants at night. Paris’s 435 sanisettes cost 11 million € a year to operate, 25,300€ per unit; San Francisco’s annual operating costs are on the order of $1 million per unit because of staffing.
This isn’t because of crime, because San Francisco is not sufficiently more dangerous than Paris to explain this, or even the perceptions thereof. The difference is that European governance is, across the board, better than American governance at disempowering local actors, who are driven by stereotypes. Anne Hidalgo doesn’t want to build housing in significant quantities, but does want to build some public housing in rich neighborhoods to own the libs (French definition of libs), and she’s the mayor and the residents of the 16th are not; Ile-de-France writ large wants to do more transit-oriented development, and so it builds some, even with some local grumbling about how redeveloping a disused factory brings gentrification.
And the way forward is to build institutions that bypass and disempower those local actors. People almost never stay within a neighborhood, but the small minority who do are overly empowered in the system of councilmanic prerogative that governs American cities. This does not involve treating their perception as if it is based in reality; this does involve passing preemption laws at the level where democratic politics is possible, such as the state, and doing much more than the weak bills California allows.
Ideology and reform
I think Noah is uncomfortable with American YIMBY praxis, because the rhetoric in a place like New York or California aims at the median Democrat in the state, to activate liberal political ideology as a substitute for the failures of non-ideological localism. This ideology is not especially radical, but does violate maxims that liberal pundits who specifically pitch to a conservative audience have learned to follow, like the taboo on calling people racist. The mainstream of political YIMBY advocacy has, I think, chosen better, understanding that at the end of the day, an upzoning bill in a safely blue state passes without Republican votes, and cutting deals with state Democratic actors, which can be localist (like exempting certain NIMBY suburbs with low transit-oriented development value) or more left-wing (like bundling with some left-wing elements, like Oregon’s introduction of weak rent controls).
And in a way, this is also how YIMBYism and public transportation investment work here, politically. As of late, social democratic parties have leaned on YIMBYism as a reason for non-pensioners to vote for them, calling for more housing permits; Olaf Scholz even called for redeveloping Tempelhofer Feld. Because it lives within a party, rather than among people who try to acknowledge culture war paranoias, the policy is clear, and sometimes can even be enacted – Germany would have built more housing if interest rates hadn’t simultaneously risen for unrelated reasons (namely, the combination of inflation and the Ukraine war). In France, it was a bipartisan effort in the sense that there wasn’t much daylight between the center-left and the center-right on the need for more housing in Ile-de-France, but the enactment did not involve the sort of horse trading that Noah envisions. This is not too different from infrastructure investments with bipartisan support elsewhere, such as the Madrid Metro, or Crossrail.
I think it’s telling that the greatest successes in the United States have not been in the most liberal places, but in swing states with liberal governance but competitive elections, like Minnesota. The barrier is not that the cities have crime or are negatively stereotyped (suburbanites around Minneapolis have plenty of those against the city), but that safe states have developed such a democratic deficit that they can’t govern. I’m fairly certain Noah is aware of this (Matt Yglesias certainly is). It just implies that this really is about seizing control of state government through ideological persuasion – in other words, reminding the Democrats of safely blue states that they are Democrats – and not about telling people way to the right of the median in these states that they are valid. We don’t do that here and American YIMBYs don’t need to do it on their side of the Pond.
Commuter Rail to Staten Island
A debate in my Discord channel about trains between Manhattan and Staten Island clarified to me why it’s so important that, in the event there is ever rail service there, it should use large commuter trains rather than smaller subway stations. The tradeoff is always that the longer trains used on commuter services lead to higher station construction costs than the smaller trains used on captive subway lines. However, the more difficult the tunnel construction is, and the fewer stations there are, the smaller the cost of bigger trains is. This argues in favor of commuter trains across the New York Harbor, and generally on other difficult water or mountain crossings.
When costing how much expansive commuter rail crayon is, like my Assume Normal Costs map, I have not had a hard time figuring out the station costs. The reason is that the station costs on commuter rail, done right, are fairly close to subway station costs, done wrong. As we find in the New York construction cost report, Second Avenue Subway’s 72nd and 86th Street stations were built about twice as large as necessary, and with deep-mined caverns. If you’re building a subway with 180 m long trains under Second Avenue, then mining 300-400 m long stations is an extravagance. If you’re building a regional rail tunnel under city center, and the surface stations are largely capable of 300 m long trains or can be so upgraded, then it’s normal. Thus, a cost figure of about $700 million per station is not a bad first-order estimate in city center, or even $1 billion in the CBD; outside the center, even large tunneled stations should cost less.

The cost above can be produced, for example, by setting the Union Square and Fulton Street stations at a bit less than $1 billion each (let’s say, $1.5 billion each, with each colored line contributing half), and a deep station under St. George at $500 million, totaling $2 billion. The 15 km of tunnel are then doable for $3 billion at costs not far below current New York tunneling costs. Don’t get me wrong, it still requires cost control policies on procurement and systems, but relative to what this includes, it’s not outlandish.
This, in turn, also helps explain the concept of regional rail tunnels. These are, in our database, consistently more expensive than metros in the same city; compare for example RER with Métro construction costs, or London Underground extensions with Crossrail, or especially the Munich U- and S-Bahn. The reason is that the concept of regional rail tunneling is to only build the hard parts, under city center, and then use existing surface lines farther out. For the same reason, the stations can be made big – there are fewer of them, for example six on the original Munich S-Bahn and three on the second trunk line under construction whereas the Munich U-Bahn lines have between 13 and 27, which means that the cost of bigger stations is reduced compared with the benefit of higher capacity.
This mode is then appropriate whenever there is good reason to build a critical line with relatively few stations. This can be because it’s a short connection between terminals, the usual case of most RER and S-Bahn lines; in the United States, the Center City Commuter Connection is such an example, and so is the North-South Rail Link if it is built. This can also be because it’s an express line parallel to slower lines, like the RER A. But it can also be because it doesn’t need as many stations because it crosses water, like any route serving Staten Island.
The flip side is that whenever many stations are required on an urban rail tunnel, it becomes more important to keep costs down by, potentially, shrinking the station footprint through using shorter trains. In small enough cities, as is the case in some of the Italian examples discussed in that case, like Brescia and Turin, it’s even possible to build very short station platforms and compensate by running driverless trains very frequently, producing an intermediate-capacity system. In larger cities, this trick is less viable, but sometimes there are corridors where there is no alternative to a frequent-stop urban tunnel, such as Utica in New York, and then, regional rail loses value. But in the case of Staten Island, to the contrary, commuter rail is the most valuable option.
Quick Note: Kathy Hochul and Eric Adams Want New York to Be Worse at Building Infrastructure
Progressive design-build just passed. This project delivery system brings New York in full into the globalized system of procurement, which has led to extreme cost increases in the United Kingdom, Canada, and other English-speaking countries, making them unable to build any urban transit megaprojects. Previously, New York had most of the misfeatures of this system, largely through convergent evolution, but due to slowness in adapting outside ideas, the state took until now, with extensive push from Adams’ orbit, for which Adams is now taking credit, to align. Any progress in cost control through controlling project scope will now be wasted on the procurement problems caused by this delivery method.
What is progressive design-build?
Progressive design-build is a variant on design-build. There is some divergence between New York terminology and rest-of-world terminology; for people who know the latter, progressive design-build is approximately what the rest of the world calls design-build.
To give more detail, designing and constructing a piece of infrastructure, say a single subway station, are two different tasks. In the traditional system of procurement, the public client contracts the design with one firm, and then bids it out to a different firm for construction; this is called design-bid-build. All low-construction cost subway systems that we are aware of use a variant of design-bid-build, but two key features are required to make it work: sufficient in-house supervision capacity since the agency needs to oversee both the design and the build contracts, and flexibility to permit the build contractors to make small changes to the design based on spot prices of materials and labor or meter-scale geological discoveries. The exact details of both in-house capacity and flexibility differ by country; for example, Turkey codifies the latter by having the design contract only cover 60% design, and bundling going from 60% to 100% design with the build contract. Despite the success of the system in low-construction cost environments, it is unpopular among the global, especially English-speaking, firms, because it is essentially client-centric, relying on high competence levels in the public sector to work.
To deal with the facts that large global firms think they are better than the public sector, and that the English-speaking world prefers its public sector to be drowned in a bathtub, there are alternative, contractor-centric systems of project delivery. The standard one in the globalized system is called design-build or design-and-build, and simply means that the same contractor does both. This means less public-facing friction between designers and builders, and more friction that’s hidden from public view. Less in-house capacity is required, and the contracts grow larger, an independent feature of the globalized system. As the Swedish case explains in the section on the traditional and globalized systems, globalized Swedish contracts go up to $300-500 million per contract (and Swedish costs, once extremely low, are these days only medium-low); in New York, contracts for Second Avenue Subway Phase 2 are already in the $1-2 billion range.
In New York, the system is somewhat complicated by the text of legacy rules on competitive bidding, which outright forbid a company from portraying itself as doing both design and construction. It took recent changes to legalize the Turkish system of bundling the two contracts differently; this changed system is what is called design-build in New York and is used for Second Avenue Subway Phase 2, even though there are still separate design and construction contracts, and is even called design-build in Turkey.
Unfortunately, New York did not stop at this, let’s call it, des-bid-ign-build system. Adams and Hochul want to be sure to wreck state capacity. Thus, they’ve pushed for progressive design-build, which is close to what the rest of the world calls design-build. More precisely, the design contractor makes a build bid at the end of the design phase, and is presumed to become the build contractor, but if the price is too high, there’s an escape clause and then it becomes essentially design-bid-build.
The globalized system that led to a cost explosion in the UK and Canada in the 1990s and 2000s from reasonable to strong candidates for second worst in the world (after the US) is now coming to New York, which already has a head start in high construction costs due to other problems. It’s a win-win for political appointees and cronies, and they clearly matter more than the people of the city and state of New York.