From transit planner Jarrett Walker, Public Transit and the Postal Service Have the Same Problem.
Postal and transit services have the same problem. We want them to attract high usage and we want them to go everywhere, but those goals imply opposite kinds of service. Pursuing either goal will cause outcomes that look like failure when judged by the other goal’s measures of success. It’s like we’re telling our taxi driver to turn right and left at the same time. When they can’t do that, we just yell louder and call them incompetent. Is that taking us where we want to go?
Public Transit and the Postal Service Have the Same Problem, CityLab