Before I reply to some of those "intermediate stops defeat the purpose of HSR" discussions, I'm posing the following calculations:
First, I've simulated the travel times for a "stop everywhere", "stop at all current VIA stops" and "stop in Malton and Kitchener only" service and three different design speeds (150 km/h as GO's current maximum speed, 177 km/h as the maximum speed for conventional rail and 200 km/h as the maximum speed for a higher-speed service) on the current Toronto-Kitchener-London alignment:
Second, the same simulation, but this time for a HSR alignment combining the 2 HSR segments proposed by the FCP "study" (i.e. the Guelph bypass and the Kitchener-London cutoff) for various design speeds (200 km/h as the maximum speed for higher-rail services, 240 km/h as maximum speed of the Acela Express and 320 km/h as the highest maximum speed for revenue services):
Third, a table with an overview of the various travel speeds (simulated above) and the achievable time savings by choosing a stopping pattern with less intermediary stops:
Forth, a table quantifying the time penalty for adding an additional stop at any intermediary stop for any design speed and alignment mentioned above:
With these tables in mind, I reply to the posts, as follows:
Indeed, all the 'non-stop expresses' being discussed in the literature I read presume stopping at Pearson as a given. They talk of the 'time to Pearson' in the same breath as 'time to Toronto'. There are two stops London to Toronto being discussed in the major SW Ontario press: K/W, Pearson. Any others would slow them down too much to the point of defeating the purpose.
As you can see in the second Table, a HSR service with a design speed of 320 km/h (achieved only on the Guelph Bypass) and one stop in Malton (as the assumed Pearson stop) could achieve a travel time of 39 minutes between Toronto and Kitchener. Even after adding stops in Brampton and Guelph South (with their respective time penalties of 3'19" and 2'08"), the travel time would narrowly meet the declared 48 minute target promoted by the Ontarian government with 46'55". Note that the same stopping pattern but with the current alignment and a design speed of 200 km/h (Malton-Brampton-Guelph) would be 53'23", thus less than 6 minutes (or 13.8%) more.
Exactly.
Add too many stops and you will take the High Speed equation out of HSR.
What takes the "High Speed equation out of HSR" is the choice of a city-pair where only 40 km of the 100 km distance can be upgraded to speeds beyond 200 km/h and the maximum time saving of choosing a HSR alignment over a Higher-Speed service on the existing alignment
is only 9'22" (35'22" vs . 44'44" for a non-stop Toronto-Kitchener service).
[...] With GO electrification, the Kitchener to Toronto stretch of HSR already won't be much faster than a GO express. HSR is suppose to be for travel between major cities and not a glorified commuter rail line. [...]
Which is the reason why the whole HSR discussion is pointless between Kitchener and Toronto, as exemplified by the fact that the target travel time of 48 minutes between the two cities seems to be feasible with a design speed of 200 km/h on the existing alignment and one stop at Malton for Pearson Airport (see first Table).
[...] Why would a Londoner {or points westward} get excited about a HSR rail line that is no faster than the London/Toronto Express that use to operate in the 80s?
As the result of a lucky coincidence, I have just about every VIA Rail timetable ever published sitting on my desk and the fastest travel time I found so far between Toronto and London was 2:00 hours (e.g. train 85 in timetable effective
1985/06/01 or train 81 in timetable effective
1979/6/17). If you refer to the third table, you will see that simply running VIA's existing services at a design speed of only 150 km/h, but with modern EMUs and the line upgraded to permit such a speed wherever feasible, would beet that travel time by 5 minutes. Increase travel speed to 200 km/h and you could serve every single existing stop (VIA and GO) in 2:02 hours.
There's no really meaningful stops between Kitchener and London, this is where the speed is made up. [...]
Yes, but even here, the maximum travel time savings of building a HSR segment as suggested by the FCP "study" is only 16 minutes (compare first two tables):
200 km/h design speed on current alignment:
Departure Kitchener: 0:48:59
Arrival London: 1:31:21
Travel Time Kitchener-London (non-stop): 0:42:22
320 km/h design speed on HSR alignment:
Departure Kitchener: 0:39:44
Arrival London: 1:06:03
Travel Time Kitchener-London (non-stop): 0:26:19
Travel time saving: 0:42:22-0:26:19=
0:16:03
To compare: upgrading the existing line to accommodate VIA's existing services in modern EMUs at design speeds of 150, 177 or 200 km/h would cut 23, 26 or 28 minutes off the current travel time (see first table).
[...] The Kitchener-Toronto corridor is definitely capable of supporting various levels of express (Kitchener-Toronto direct), intercity (VIA-type spacing) , and regional (GO-type spacing) service at once.
Agreed, but building two HSR segments with respective lengths of 42 km and 62 km could be seen as highly questionable if they yield only 10.6 and 15.4 seconds of travel time savings per km greenfield HSR alignment, compared to upgrading the existing alignment to 200 km/h.
Could you PLEASE stop referring to the SRT as a failed technology. The failure of the SRT is 110% the fault of the TTC itself and has absolutely nothing to do with the technology. Vancouver's SkyTrain is faster, more frequent, cheaper to run, and more comfortable that the Toronto subway. You can hate the line but don't confuse the SRT to SkyTrain.
I don't think anyone denies that RT (as exemplified by Vancouver's superb Skytrain) is a superior system compared to TTC's Subway with its absurd
Toronto Gauge. However, given that the system choice has already been made and created a path dependency, it was a huge mistake to create a different, incompatible system rather than simply extending the Subway on the same overground alignment around Scarborough. For the same reason, establishing a separate incompatible passenger rail intercity system would be counter-productive (as acknowledged by China in the wake of the
Transrapid white elephant) and this is exactly what
kEiThZ was referring to in this clarification you apparently missed:
I'm thinking of nonsense like those pushing Hyperloop in Canada.....
[...] Staying on-topic for High-Speed London-K/W-Pearson-Toronto:
[TWINDEXX is a double-deck train that is specially designed by Bombardier Transportation for Swiss Federal Railways (SBB). The rolling stock was designed in response to SBB's proposals to launch an intercity high-speed express train. The trains proved to be the feasible choice for long-distance intercity transport on SBB's existing routes with short platforms.
[...]
TWINDEXX is successfully operated in countries such as Switzerland, Denmark, Poland, Germany, Luxembourg and Israel. Its operational speed is 160kmph to 189kmph, with a maximum speed is 230kmph.]
[...]
The TWINDEXX Vario comes with both low and high floor entrances, which enhances the accessibility of the passengers....Deutsche Bahn was the first customer for TWINDEXX Vario. The variant can travel with speeds ranging from 160kmph to 189kmph. It can be used as an EMU and Diesel Unit. [...]
http://www.railway-technology.com/projects/bombardier-twindexx-double-deck-trains/
Nothing of this matters as long as Transport Canada imposes the FRA standards of crash-worthiness (as helplessly outdated and counter-productive they might be). Doing the trick of concessioning it as a light rail like the O-Train in Ottawa will almost certainly not work for an intercity passenger rail service.