Because Washington system is bad shape, there been talk of shutting a line down 100% for up to 6 months or more to fix it like its needs to be. Once done, move on to the next line that needs to be done as well finish off the on going work that has been taking place. Just keep moving from line to line until its all done.
This is an example of poor management and lack of funding. More management from top to bottom.
TTC got its wakeup call in the 90's and number 1 issue at all times these days as well funding it.
The trouble with the TTC is that it is still underfunded. Maybe not as bad as in Washington, but the TTC can't survive on one-time gifts from the federal government, which may not happen the following year, election, or government in charge.