Breakdown
Show inter-district route counts when the route info view is open and routes are showing.
Works best on roads, and you’ll need to make districts for all your city areas, otherwise you’ll only be able to tell the difference between "out of town" and "in town".
But also works on railways and footpaths, districts, buildings and vehicles. May work on other objects.
Source code is available: https://github.com/whyoh/CitiesBreakdown
Comments, criticism, bug reports etc are all welcome – either here or on github.