An interesting comment thread going on over at Null Space under the heading “Transit Tuesday.”  As I post, it’s up to 21 comments (and only three of them are from me!)  Bottom line: Designing a transit system depends on the choices you make and what you want the system to do.  A system that’s designed to take the maximum number of cars off the road might look and work completely different than a system that’s designed primarily to provide transportation to people who have no other options.  Which is the “right” system? It depends on what you want the system to do.

We have to keep in mind the fundamental rule for economics: limited resources, unlimited wants and needs. You can never have enough to do everything you want to do, so where do you draw the line?