Link: “Basics: Access, or the Wall Around Your Life” by Jarrett Walker
Here’s a good article about evaluating public transport through the prism of “access”, or how much of the city you can reach within a reasonable amount of time for the given purpose. Certainly in Melbourne this is very unequal across the city; the further away you get from the inner suburbs, the more large “gaps” you get between railway lines with very poor access to the wider urban area.