It is extremely difficult, if not impossible, to predict what new information can be derived from the combination of different datasets collected from your devices.
Free public roads and highways? Free public parking? Good, normal, should be encouraged. Add a lane or two to the highway? Always a good idea! (hint: it never is)
Free public transit? KILL IT WITH FIRE!!! It will never work (those places it did are aberrations)
Go look up:
1. Jevons paradox (induced demand): More road capacity → more traffic.
2. Marchetti’s constant (30-minute city): Average commute time is stable; faster modes → sprawl.
3. Downs–Thomson paradox (transit sets highway speed): Car speeds improve only if transit gets better.
4. Braess’s paradox (network effect): Adding a new road can worsen traffic for everyone.
Every time you fuel up a vehicle you are paying a "fare" to use the road. The fare is subsidized (just like with the bus), but it is very much there and not zero.
>Every time you earn money/spend money you are paying taxes.
>I guess busses run on fairy dust too?
Every vehicle on the roads is basically paying to be there via fuel tax (which in whole or large part is spent on the roads). Busses pass some of this cost on to their riders who's fare may be then subsidized in part or full.
Especially as the N of datasets grows.