I would like to propose a parking-friendly application especially for cars but also for motorcycle and bikes.

It would be a sort of knowledge sharing for parking :
- where to park for free
- when it is free or not
- when you can't access to the parkings
- tricks
- where and when the "police municipale" comes to check
- where there are damage spots for your car
- where there are safe spots to park
- where to park for disabled persons
- and so on...

It would be like a map divided into zones where people can add/share their knowledge and experiences. Maybe threw a web page or maybe threw an application.