drum118
Superstar
[/QUOTE]In specific messages did suggest a long-term transition period (including 30 year options). It could be incremental (e.g. 4 coach RER EMU at the UPX station) that slowly migrates to longer trains during the high speed train era.
Regarding Bloor/Weston, I noticed at least one high platform next to a low platform, so they can "cannibalize" into each other, and use the "keep certain coaches closed" technique. But if this is not possible at all tracks at all platforms -- then yes you're right. Many compromises would need to be made. Worse comes to worse, you'd cannibalize low stations (open only 6 or 7 coaches of bilevels, while building the high platforms for 5 or 6 coaches) for the sections where UPX station could not be extended.
If this is not doable by RER Phase I and GO chose at least one high-floor EMU for the UPX replacement (are we going to discontinue UPX Union/Pearson otherwise?), you end up with an even-more-mixed-EMU fleet, but a migration path of some kind (with some, even if not all, of the elements suggested) might be needed for RER Phase II to gradually unify the fleet. During the transition period, you could run many trains as 3-coach, 4-coach, 5-coach, 6-coach and at the "difficult" stations, only open 3-coach, 4-coach, until a RER Phase II occurs and by then the UPX stations are probably 15 years and people have long forgotten.
Either way, it looks like tough decisions will be need to be made (electrify UPX or not? Is electrified UPX high platform? Do we use hybrid high/low platform trains? Discontinue UPX stations when merging into RER? What can be done with the current $13.5bn RERification, or needs to be bumped to RER Phase II as an incremental step? Build infill stations to serve high or low platforms? What is politically feasible? Even the strange ideas might be looked at: Do we convert the UPX station to low-platform for RER trainset compatibility? Will we get more blowback if we modify the station this way or that way? Are people still demanding a subway experience on the GO network with better accessibility, including all-door high-floor boarding? Never electrify UPX? Retrofit the UPX trainsets which needs to become enlarged/transit friendly or risk 2018 election fallout? Replace the UPX trainsets with RER trains? Etc. Etc.) Balancing all of these considerations is why I think high-platform EMU decisions need to be carefully thought-out.
All the above is a rock and a hard place: "What does electrified UPX (or its replacement) look like?" In 10 years? 20 years? 30 years? One that's acceptable to the population, and also politically acceptable, with a migration path that's less of a rock-and-hard-place.
If Metrolinx can join/detach trains for longer trainsets during peak, that would be great!
My understanding is that this has not been done because it takes too much time, but I realize many new EMUs have quick attach-detach couplings designed for daily couplings. That would help solve a USRC trainset throughput issue during peak, while running shorter trains offpeak.
So if that is operationally done, then some trains could double-berth, and some trains could be coupled, depending on needs. I'm not sure a unified RER-UPX needs to become 10-coach during peak. Unless they plan to decouple at Woodbine RER station (THAT would be interesting) and send half of the train down the Pearson spur... But staffing and dwell-length could be issues.
You know that moving UPX to another platform location requires rebuilding that platform at great cost as well been out of service for months. What does it do to other lines having UPX taking over an existing platform???
Using UPX as part of a ST/RER using the Stoufville line with more infill stations should happen.
I can tell you for a fact that both Bloor and Weston station will have to be rebuilt from the ground up for high platforms regardless if its only for 5 car or 12 cars. The stairs and elevators are in the way as well the shelters. If you are building extra lenght for UPX only, you need to build a longer platform for GO trains as well based on existing fleet.
With high platforms like they are now will require express trains to slow down passing them.
All current and existing EMUs requires very little time connecting or decoupling compare to the current way that the existing fleet does it. It takes about 30-60 minutes to break drown and makeup the existing fleet and why we only see 10-12 trains in place of 5/6 off peak. Very costly to do it with current fleet compare to what it will be with EMUs.
Electrify UPX has been on the books since GO took over the line as well mandated in the EA as part of approval. When will it happen depends on a number of things, but most of all 2018 election.