First, I need to clarify and deconflate the two issues. For an HSR line connecting a handful of highly populated cities along a relatively short linear corridor, it’s certainly doable and I completely agree our Corridor is ready for it. For building a regional network (of conventional or HSR), distance between urban areas matters. My original sentiment about American (NE)-level being an intermediate step was voiced regarding building a regional network and maintaining local service. Canada needs both; we have (basically) neither.
The AVE line to Lisbon, which is under construction, goes right through the middle of Extremadura. And Massif Central may not have TGV lines but they go all around it.
I stand corrected about the Lisbon line. But more on this below.
The stations on the edge of towns and cities in France are served by massive parking lots, as I'm sure they will be in Canada.
Exactly. Hence why (very) high urban density and local feeder transit is not the be-all-end-all for the viability of a regional rail network (or even HSR lines), and why I said it shouldn’t be the top consideration in this discussion (of course it doesn’t mean it “doesn’t matter”).
The density of entire countries matters when HSR is being built across the entire country.
No, it doesn't. The density along the corridors matters (in many cases; or it could even matter in the opposite way, with low density areas being easier to raze straight lines across), the size of the end markets matters (in most cases), but the density of the entire country doesn't matter, especially not the number obtained by dividing the country's population over its area.
Again, look at a map. The W-C corridor is no more defined by cities separated by large distances than France or Spain, or many other countries with superior rail networks. Madrid and Barcelona are almost exactly the same distance apart as Toronto and Montreal, and the only significant city between them is Zaragoza, which is smaller than Ottawa. The original TGV line to Lyon isn't much shorter and there's nothing between it and Paris but towns the size of Belleville.
Sure, let’s look at maps:
(higher res:
http://sedac.ciesin.columbia.edu/wd...sity_Grids/Population_Density_2000_Europe.pdf)
(higher res:
http://sedac.ciesin.columbia.edu/wd...ids/Population_Density_2000_United_States.pdf)
(higher res:
http://sedac.ciesin.columbia.edu/wd...ids/Population_Density_2000_North_America.pdf)
Use the higher res pdf to see the details at the same scale, and compare these to the rail line maps I posted earlier. For Paris-Lyon, see the “web” of density that radiates out of Paris and the dots of high density, which were
specifically avoided during the LGV’s construction (same as a lot of the subsequent lines) to achieve straighter and faster alignments, and that’s doable largely because those areas are
already served by the existing network of regional and long distance rail. And “why limit your comparison” to this one section, and not look at where the rest of the TGV network is: the north, and the Lyon-Marseilles corridor, where population is concentrated. Again, the situation is less relevant for France because many of the LGVs only have a handful of stops and largely avoid urban areas, because they can, and chose to.
The situation is similar for Spain, and even there you see that the rail lines largely follow the "density threads" among cities (except for that one section between Madrid and Zaragoza which you emphasized):
But Spain is an even more unusual case, which goes to show what enough political will, money and a very different social culture can do.
As for the US northeast corridor, it's the exact opposite of what you think. Boston, Hartford, New York, Philadelphia, Baltimore, and Washington are all much closer together than the European cities I just mentioned - that area is more densely populated.
I don’t need to
think, I
know what the distances and densities are like; I go up and down the corridor every couple of months and just did it again last week. Looking at the density maps, it’s clear the density spread is comparable to northern France or Italy, and obviously pales compared to Germany, BeNeLux or much of England, where the rail network is arguably the densest and most developed. Hence the nature of the “steps”. For kicks, compare all these areas to the QWC.
I don't see any evidence that large cities that are relatively far apart are worse served by HSR than medium sized cities closer together.
It doesn’t mean they will be worse served, it means it will just be that much harder politically and economically in the North American mindset to get the lines built. Doesn’t mean it shouldn’t be built, nor that it’s not worth building, nor that it wouldn’t be successful if built.