Seems like some way to be better aware of "service days" would be the solution (e.g. reminders or the like)?
The second seems like a more difficult problem to solve on your own; it's really up to the city to clearly demarcate where you're allowed to park and where you're not. 10cm on 10 metres is kind of ridiculous. This is a political thing.
I don't really see how this data can meaningfully help, other than maybe some sort of "lots of people have been fined in this street, so be aware to check where you're allowed to park"-type of warning.
The second seems like a more difficult problem to solve on your own; it's really up to the city to clearly demarcate where you're allowed to park and where you're not. 10cm on 10 metres is kind of ridiculous. This is a political thing.
I don't really see how this data can meaningfully help, other than maybe some sort of "lots of people have been fined in this street, so be aware to check where you're allowed to park"-type of warning.