Quote:
Originally Posted by milomilo
I agree with basically all of this just with slightly different levels of hope and pessimism.
One thing though - 3 hours for Toronto - Ottawa is pretty quick actually. That's only a little slower than London - Newcastle on the ECML, which is a proper high quality line that almost qualifies as HSR. It gets to its 200km/h full speed and stays at close to it the whole way with just a handful of stops. So VIA HFR must have substantial running at close to top speed to achieve that time.
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Urban Sky explained this a while back. On UrbanToronto I think....
In any event, in the US, the FRA allows 125 mph passenger train operation on Class 7 without grade separation, but has to have some substantial barriers and onboard signalling. See the last page of this pdf:
https://www.apta.com/wp-content/uplo...Guidelines.pdf
Transport Canada hasn't really defined track classes beyond Class 5. So the assumption was that TC might not approve above 110 mph without grade separation. I suspect the government is working on changing that.
However, that still doesn't solve the geometry problem. A lot of the Peterborough-Smiths Falls portion just doesn't have the geometry to support higher speeds. There's a good analysis done by this blog here:
https://ontariotrafficman.wordpress....l-time-claims/
Now this has been known for a while, and is presumably included in VIA's projections. But upgrading to fully grade separated would over and above all the straightening required (102 of 397 km as per that analysis).
So while 3 hrs from Toronto-Ottawa is impressive, it's actually not indicative of a substantial amount of 200 kph running. It's a shift from an average of 120 kph to 130 kph (previous estimate was 3:15 hrs). As the blog show above, this is achievable with 110 mph/177 kph running just using straightening.
By the way, we're already seeing the first signs of scope creep with this whole Ottawa bypass thing: