That actually isn't true at all. The kind of transit we're discussing can be built on existing roads.
Subways on the other hand generally require the expropriation of both commercial and residential property.
I have a idea! How about an above ground 'LRT subway' in Scarborough and north of Finch.
When I refer to "subway" I refer to underground transit here. When I refer to scarborough, and the suburbs having heavy rail transit, I mean having subway technology (the rolling stock used on the existing subways) run grade separated yet aboveground.
Having an LRT subway in Scarborough and north of finch would be stupid, if you're going to tunnel more than 5 km, just make it a full-fledged grade separated line with heavy rail.
I'm sorry, but a lot of your claims just aren't the case.
Not only are many metros lighter, cheaper to operate and buy, have a much higher maximum speed and rate to accelerate and decelerate, so are modern mainline electrics. Catenary has become the favoured choice when possible for various good reasons. And if you're boring a tunnel, it costs only a fraction more to do it with a larger bore.
But on the bore point, perhaps you fail to realize that Crossrail not only uses a slightly smaller bore than the Spadina Extension, so does the Paris RER, and they run double deck mainline trains through them as well. And then well out to the suburbs, and well beyond in some cases.
I'm sorry, but that statement is a load of bullsh!t, crossrail tunnels are 6.2 meters in diameter (
http://www.crossrail.co.uk/construction/tunnelling/railway-tunnels/), and TYSSE tunnels are 5.4 meters in diameter, (
https://www.thestar.com/news/ttc/2011/06/16/supersized_tunneling_machines_ready_to_launch.html), a difference of 0.8 meters in diameter, which, for a tunnel, is huge, requiring (1-(7.29 pi/9.61 pi))*100 = 24.2% more material to be excavated. There are also a lot of challenges with digging larger tunnels (more prone to hitting utilities, greater breakdown rate, etc), so this is a huge cost factor that has to be considered. The Paris RER twin tunnels (not single bore tunnels, that's an unfair comparison) require tunnels 6.7m in diameter, even wider than Crossrail. (
https://www.tunneltalk.com/France-Jul2017-Paris-constructing-mega-metro-system.php)
In terms of cost, this becomes extremely evident when you actually look at the cost of tunneling. Now, it's hard to say for crossrail and the Paris RER, but we'll make some basic assumptions. The cost of building crossrail is 14.8 Billion pounds, or 26.06 billion Canadian dollars, and the Paris RER is 20.5 billion €, or 31.75 Billion Cad. Now, it's difficult to say how much of this is on tunnels, but looking at distance alone, Crossrail is ~220 CAD/km and the Paris RER is ~159M Cad/km. Now, those alone seem fairly impressive, but once you consider that a good majority of these lines are running at grade and on existing lines, their price becomes less impressive, but this isn't the point. We're looking at tunnels.
We'll first look at Crossrail. Of the 118km of the line that's being built, only about 21 km of it is actually new, and that's the underground section. The rest is preexisting. Now, there are rehabilitation costs and new station costs. There are 28 aboveground stations and 97km of track. If we assume it costs 200 million per aboveground station and 20 million per kilometer of track, the total costs for the aboveground section are 5.6 + 2 B is about 7.6 billion for the aboveground section. We'll add another 2 billion dollars for rolling stock, and the total for the aboveground section and all rolling stock is 9.6 billion dollars (and this is a high estimate, station construction and rehabilitation is probably closer to 100 million dollars per station. This leaves about 16.46 billion dollars left for the tunnels and underground stations or about 784 million dollars per kilometer of tunnel and stations. Compare this even to the SSE, which is estimated at 3.6 billion for 7 km, that's only 514 million/km. Even if you throw in 2 more stations and add a billion dollars to the price, the price per kilometer is 660M/km, still significantly less than that of Crossrail. The TYSSE was built for 3.2 Billion for 8.6 km of track, or 375 M/km, and this subway started construction at around the time of crossrail, so it's a better comparison.
The Paris RER doesn't really have numbers on tunneling distances, but I can guarantee that it's almost the same if not more than crossrail.
Now for train weights: a TR train weighs 1.47 tonnes per meter, while a Crossrail train weighs 1.29 tonnes per meter, which is a difference of about 12.25%, but when you consider the fact that the TR is 0.36 meters (~11.5% wider), this difference is negligible, especially when you consider that the 345s are newer and therefore have lighter technologies and fewer seats.
The acceleration argument is moot: they are highly variable depending on the city and system. For instance, prague has train accelerations of 1.4 m/s^2, while the TTC's is 0.9 m/s^2. Compare this to crossrail, which has an absolute maximum (not practice) acceleration of 1 m/s. Maximum speed is also moot; it's dependent on the city's needs. Since Toronto doesn't have station spacing wide enough necessary for 140 km/h operation, they don't use it. I also guarantee that Crossrail trains will be running closer to 100 km/h while underground.
Price per trains is another moot point: both the TRs and the class 345s cost around 3 million dollars per car, however, the TRs are longer and wider and have a unique guage.
Catenary is favored for aboveground purposes for obvious reasons, yes, it allows trains to go faster, but there are still really bad icing issues and higher costs to maintain. This is why catenary works so well for RER; all of it is aboveground. It does not, however, work at all well for the DRL or any other underground line in the city, especially if we're trying to save money.
London will only build Underground subways as extensions of existing lines, and limited ones at that. (The Northern extension from Brixton, for instance) The Channel Tunnel cost less per distance to build per tunnel section than London's last Underground line did. (see note at end) London will never build another 'subway' per-se. Why when Crossrail is better in every way and cheaper?
I repeat...well, I didn't actually state it last time: Ford is a moron. Apologies to those with deficiencies, but almost all of them mean no harm. Ford certainly does mean harm, he's proven it time and again.
When I see his handlers put a leash on him, and a muzzle, I'll back off the dialog and throw the poor Dougie a bone. A bull in a china shop would do less damage.
And for the record, I've voted Conservative in Canada before, and I'm the son of an UK Conservative rep, now deceased.
Note as per Jubilee Line Extension costs:
https://www.theguardian.com/uk/1999/feb/16/keithharper
There's a fair bit more involved in the overall project, but this does typify the fate of subways. NYC's Second Av project was the most expensive rail project per distance ever in the US. A good part of these instances is mismanagement. But another part is the medium. It's dated, inefficient and slow. And very expensive compared to far superior ways of satiating the demand.
Crossrail is not cheaper, it's just geared more towards the suburbs and commuters. Downtown London has more than enough lines to serve every location. 4th rail is inefficient, and the trains (with the exception of the subsurface lines) are tiny. That's why they're making a shift to the larger class 345 type trains, not because it's inherently better in terms of tunneling costs.
There's no doubt that Ford is a moron, he doesn't even take public transit so he should have no say on what should be built where.
I'm not a conservative, I voted NDP in the last election. That doesn't mean my favoring of subway technology is a determining factor to my political views, and it doesn't mean I despise what you dub "metro" technology either, it just doesn't make sense as a technology for new subway lines in the city.
330 GBPs equate to 580 CAD, it's still cheaper than Crossrail, and by a longshot.