Through-Running and American Rail Activism
A bunch of us at the Effective Transit Alliance (mostly not me) are working on a long document about commuter rail through-running. I’m excited about it; the quality of the technical detail (again, mostly not by me) is far better than when I drew some lines on Google Maps in 2009-10. But it gets me thinking – how come through-running is the ask among American technical advocates for good passenger rail? How does it compare with other features of commuter rail modernization?
Note on terminology
In American activist spaces, good commuter rail is universally referred to as regional rail and the term commuter rail denotes peak-focused operations for suburban white flighters who work in city center and only take the train at rush hour. If that’s what you’re used to, mentally search-and-replace everything I say below appropriately. I have grown to avoid this terminology in the last few years, because in France and Germany, there is usually a distinction between commuter rail and longer-range regional rail, and the high standards that advocates demand are those of the former, not the latter. Thus, for me, a mainline rail serving a metropolitan area based on best practices is called commuter and not regional rail; there’s no term for the traditional American system, since there’s no circumstance in which it is appropriate.
The features of good commuter rail
The highest-productivity commuter rail systems I’m aware of – the Kanto area rail network, the Paris RER, S-Bahns in the major German-speaking cities, and so on – share certain features, which can be generalized as best practices. When other systems that lack these features adopt them, they generally see a sharp increase in ridership.
All of the features below fall under the rubric of planning commuter rail as a longer-range subway, rather than as something else, like a rural branch line or a peak-only American operation. The main alternative for providing suburban rapid transit service is the suburban metro, typical of Chinese cities, but the suburban metro and commuter rail models can coexist, as in Stockholm, and in either case, the point is to treat the suburbs as a lower-density, longer-distance part of the metropolitan area, rather than as something qualitatively different from the city. To effect this type of planning, all or nearly all of the following features are required, with the names typically given by advocates:
- Electrification/EMUs: the line must run modern equipment, comprising electric multiple units (self-propelled, with no separate locomotive) for their superior performance and reliability
- Level boarding/standing space: interior train design must facilitate fast boarding and alighting, including many wide doors with step-free boarding (which also provides wheelchair accessibility) and ample standing space within the car rather than just seated space, for example as in Berlin’s new Class 484
- Frequency: the headway between trains set at a small fraction of the typical trip time – neighborhoods 10 km from city center warrant a train every 5-10 minutes, suburbs 20-30 km out a train every 10-20 minutes, suburbs farther out still warrant a train every 20-30 minutes
- Schedule integration: train timetables must be planned in coordination with connecting suburban buses (or streetcars if available) to minimize connection time – the buses should be timed to arrive at each major suburban station just before the train departs, and depart just after it arrives
- Pedestrian-friendliness: train stations designed around connections with buses, streetcars if present, bikes, and pedestrian activity – park-and-rides are acceptable but should be used sparingly, and at stations in the suburbs, the nearby pedestrian experience must come first, in order to make the station area attractive to non-drivers
- Fare integration/Verkehrsverbund: the system may charge higher fares for longer trips, but the transfers to urban and suburban mass transit must be free even if different companies or agencies run the commuter trains and the city’s internal bus and rail system
- Infill: stations should be spaced regularly every 1-3 km within the built-up area, including not just the suburbs but also the city; slightly longer stop spacing may be acceptable if the line acts as an express bypass of a nearby subway line, but not the long stretches of express running American commuter trains do in their central cities
- Through-running: most trains that enter city center go through it, making multiple central stops, and then emerge on the other side to serve suburbs in that direction
Is through-running special?
Among the above features, through-running has a tendency to capture the imagination, because it lends itself to maps of how the lines fit together in the region; I’ve done more than my share of this, in the 2009 post linked in the intro, in 2014, in 2017, and in 2019. This is a useful feature, and in nearly every city with mainline rail, it’s essential to long-term modernization; the exceptions are cities where the geography puts the entirety of suburbia in one direction of city center, and even there, Sydney has through-running (all lines go west of city center) and Helsinki is building a tunnel for it (all lines go north).
The one special thing about through-running is that usually it is the most expensive item to implement, because it requires building new tunnels. In Philadelphia, this was the Center City Commuter Connection, opened in 1984. In Boston, it’s the much-advocated for North-South Rail Link. In Paris, Munich, Tokyo, Berlin, Copenhagen, London, Milan, Madrid, Sydney, Zurich, and other cities that I’m forgetting, this involved building expensive city center tunnels, usually more than one, to turn disparate lines into parts of a coherent metropolitan system. New York is fairly unique in already having the infrastructure for some through-running, and even there, several new tunnels are necessary for systemwide integration.
But there are so many other things that need to be done. In much of the United States, transit advocacy has recently focused on the issue of frequency, brought into the mainstream of advocacy by Jarrett Walker. Doing one without the other leads to awkward situations: after opening the tunnel, Philadelphia branded the lines R1 through R8 modeled on German S-Bahns while still running them hourly off-peak, even within the city, and charging premium fares even right next to overcrowded city buses.
This is something advocates generally understand. There’s a reason the TransitMatters Regional Rail program for commuter rail modernization puts the North-South Rail Link on the back burner and instead focuses on all the other elements. But there’s still something about through-running that lends itself to far more open argumentation than talking about off-peak frequency. Evidently, the Regional Plan Association and other organizations keep posting through-running maps rather than frequency maps or sample timetables.
Through-running as revolution
I suspect one reason for the special place of through-running, besides the attractiveness of drawing lines on a map, is that it most blatantly communicates that this is no longer the old failed system. There are good ways of running commuter rail, and bad ways, and all present-day American commuter rail practices are bad ways.
It’s possible to make asks about modernization that don’t touch through-running, such as integrating the fares; in Germany, the Verkehrsverbund concept goes back to the 1960s and is contemporary with the postwar S-Bahn tunnels, but Berlin and Hamburg had had through-running for decades before. But because these asks look small, it’s easy to compromise them down to nothing. This has happened in Boston, where there’s no fare integration on the horizon, but a handful of commuter rail stations have their fares reduced to be the same as on the subway, still with no free transfers.
Through-running is hard to compromise this way. As soon as the lines exist, they’re out there, requiring open coordination between different railroads, each of which thinks the other is incompetent and is correct. It’s hard to sell it as nothing, and thus it has to be done as a true leap generations forward, catching up with where the best places have been for 50+ years.
