There might be a western extension, but there exist some issues with that: 1. Metrolinx wants OL to relief Union station by transferring the GO riders to OL at East Harbor and at the Exhibition. They are going to fail at East Harbor; why would you want to transfer if the OL trains are quite...

Never said we "must" use massive trains. Just that TTC trains are not outliers, and therefore are a valid option rather than something to be avoided at all costs. Placing a hard constrain on one part of operation is not ideal. Possibly it will still work well if there are no other constrains /...

OK, let's hope it works. I am wary of placing the constrain on the eastern approach to Union and having to organize the future more frequent service around that constrain. But, maybe it is doable.

The spot marked with the red cross on your map is probably fine. But where will the other portal go? A short tunnel would have to emerge in the Bala Sub corridor, and would be very close to the river and at risk of flooding. In order to avoid the flood area, you would need to continue the tunnel...

If the VIA platforms are in the middle, and all express and local GO trains run through, then probably yes, can do with 4 tracks. But almost every other scenario will see conflicts between the westbound and eastbound operations, that could be avoided if you had more tracks and more flexibility...

Obviously, every subsequent pair of tracks will bring less incremental benefit then the previous pair. I don't see much need for the 7th and 8th track, and they wouldn't fit in the rest of corridor anyway. That doesn't prove the 5th and 6th tracks are not needed. "how a 5th/6th track will help...

RER and Crossrail provide much more service within the city than GO currently does, and their function partly overlaps with the function of local metro lines. Anyway, there is no hard rule that regional services must use big trains and local services must use small trains. Either service should...

Replacing the Brentcliffe-to-Kennedy section that's currently at grade, with an elevated guideway? Maybe, but need to be looked at chunk by chunk. The Don Mills station will be in the tunnel. Between the Brentcliffe portal and the Don Mills portal, the main obstacle for the elevated guideway is...

More tracks means more operational flexibility in a number of situations, for example: - Recovering from a previous service disruptions. When you have a backlog of local trains from both LSE and Stouffville services, the ability to use 2 tracks simultaneously for the westbound all-stop service...

TRs are more massive than a typical subway train, but not absolute outliers. If I get it correctly, London Crossrail trains are 2.77 m wide (vs TR's 3.2 m), but are 200 m long (vs TR's 150 m). Paris RER trains are 2.4 m wide, but can be up to 240 m long.

But had the capacity to meet the future demand, and didn't block the future rail corridor expansion.

The exact shape of HFR is unknown at this time. Even if they choose the Peterborough route, they might want to use the Uxbridge sub and then the section of LSE west of Scarborough Junction, in order to reach Union Stn. In some way it is easier not to connect to Union at all, and place the HFR...

If we were talking about a new multi-track corridor, where only some tracks can fit on surface and some have to be tunneled - sure, it makes a perfect sense to keep the local track on surface and put the express tracks in the tunnel. That saves on the station costs. But does that apply to the...

^ The 97 is bad. In my experience, walking to the closest subway station is always faster than waiting for the 97, unless the bus happens to be in sight. On the other hand, the bus frequency is a budget decision and isn't based on any technical limitation. They can run the bus every 15 min or...

Thanks for the link, I remembered a document exists and tried to find it, but couldn't. The most reasonable alternative is SITE 3 - LEASIDE. The report itself lists the pros: "Sufficiently sized, as above. Third lowest cost based on preliminary analysis." And the cons: - Consultation required...

Maybe. The only disadvantage is that this route is considerably longer than any other option, and that will affect the travel time and the # of trains needed. But if this route is much easier to build, being almost entirely in the highways corridors, then possibly yes.

A high-speed connection between Square One and Toronto Downtown would be very well used. Unfortunately the Galt sub / Milton GO will not be employed for that purpose, as it is the CP mainline and that traffic will not be redirected in the foreseeable future. What are the other options? 1a. The...

Hurontario is under construction already. Eglinton looks like a good next candidate. With Eg West being tunneled / elevated between Mt Dennis and Renforth, it will be overbuilt for its original scope. But if it gets another branch running into Mississauga, then the tunnel kind of makes sense...

This cannot trap the greenhouse gases, including CO2 or methane. Can trap soot and other particles, so a massive fleet of hydrogen cars might have some positive effect on the air quality in a big city.

I think on-board hydrogen production won't be used, as the hydrogen would need to be compressed (its energy density at the atmospheric pressure is way too low). Having a high-pressure compressor on-board would add complexity, increase the risk of malfunction etc. However, a relatively small...