BurlOak
Senior Member
If you dig down deep enough to go under 6 level parking garages, It will be too deep to be desirable as an alternative to transferring on the Yonge Line. as I said, people complain about 3 flights of stairs, imagine 7 or 8.
I am sure that everyone has seen the TRZ proposal. http://www.skyscrapercity.com/showthread.php?t=670156 . One thing I like about it is that the DRL goes over the Yonge and University subways. This makes it much more desirable to use since it is a simpler one-level transfer. It also would greatly reduce the cost of construction.
I noticed both maps above, plus the TRZ proposal, have some pretty tight looking curves - either weaving through downtown or making the curves on either end to head "north". I wonder if Mark III (SkyTrain) were used, it may be easier to navigate these curves (tighter radius allowed) - and it would require a somewhat lower tunnel height to assist in going over the two existing subway lines.
I also note the TRZ had 3 stations between Yonge and Don River and 2 between Don River and Pape.