At the request of interested Cantons, the Confederation may declare intercantonal agreements to be generally binding or require Cantons to participate in intercantonal agreements in the following fields:
the execution of criminal penalties and measures;
school education in the matters specified in Article 62 paragraph 4;
cantonal institutions of higher education;
cultural institutions of supra-regional importance;
waste management;
waste water treatment;
urban transport;
advanced medical science and specialist clinics;
institutions for the rehabilitation and care of invalids.
A declaration of general application is made in the form of a federal decree.
The law shall specify the requirements for a declaration of general application and for a participation requirement and regulate the procedure.