As people on social media compare the German and American rail networks, I’m going to share two graphics from the upcoming Northeast Corridor report, made by Kara Fischer. They are schematic so it’s not possible to speak of scale, but the line widths and colors are the same in both; both depict only lines branded as Amtrak or ICE, so Berlin-Dresden, where the direct trains are branded IC or EuroCity, is not shown, and neither are long-range commuter lines even if they are longer than New Haven-Springfield.
The Northeastern United States has smaller population than that of Germany but not by much (74 million including Virginia compared with 84 million), on a similar land area. Their rail networks should be, to first order, comparable. Of course they aren’t – the map above shows just how much denser the German rail network is than the American one, not to mention faster. But the map also shows something deeper about rail planning in these two places: Germany is two-dimensional, whereas the Northeastern US is one-dimensional. It’s not just that the graph of the Northeastern rail network is acyclic today, excluding once-a-day night trains. More investment in intercity rail would produce cycles in the Northeastern network, through a Boston-Albany line for one. But the cycles would be peripheral to the network, since Boston, New York, Philadelphia, and Washington are collinear on the Northeast Corridor, and the smallest of these four metro areas, Philadelphia, is larger than all those on the branches depicted above, combined.
The most important effect on network planning is that it turns the Northeast Corridor into easy mode. We would not be able to come up with a coherent timetable for Germany on the budget that our program at Marron had. In the Northeast, we did, because it’s a single line, the main difficulty being overtakes of commuter trains that run along subsections.
This, in turn, has two different implications, one for each place.
Continue reading by clicking below: