On Tue, 31 Jul 2007 05:57:34 -0700, sweek
wrote:

24 hour running and express services are things I really wish we had.

The greatest advantage of the four-track system [1] is that it allows
24-hour running. The express trains often save you less time than you
might think.


[1] Well, it mostly is... I was particularly intrigued by the
three-track layout on the 7 in Queens...