nfitz
Superstar
It's not that simple. You can't put platform doors on until you've got automatic train control (ATC) or else you have to add time at each station to carefully line up the train in exactly the right place. The first piece of ATC is from Union to Eglinton - and then to follow is the rest of the YUS line; it will probably be well into the next decade before they turn to the Bloor-Danforth line. However the bulk of modernization is on the Bloor-Danforth line.It's too bad that the TTC isn't installing platform doors as part of the modernization.
There are other projects looking at platform doors.