Management of Subways to Be Split

From the NYT: Management of Subways to Be Split
“The goal, Mr. Roberts said, is to have 24 subway lines operating in many ways as 24 self-contained railroads. (The number may vary, depending on how the lines are counted.) They will compete against one another and be rated on service, cleanliness, on-time performance and other measures.”
This is interesting. They are starting with lines that are isolated, which is smart. How they will deal with lines that interact (share track and platforms) will be interesting, and may be a true test of whether this kind of decentralization of responsibility can be made to work in such an integrated system.