There is currently petition citizen initiative underway to urge the European Commission to connect all capitals of the EU with high-speed rail.
I’ve already signed it, are you joining ?
https://europa.eu/citizens-initiative/select-language?destination=/initiatives/details/2023/000004
Edit: It’s not a petition, it’s a citizen initiative.
BTW it’s not a petition, it’s a citizen initiative, an official way to present a law at european level. If it passes the commision will have to at least ddiscuss about this