Question juridique clé
Whether the appellants A. and B. were entitled to challenge the regulation and cantonal decision
Solution extraite
A. and B. were entitled to bring the constitutional complaint because they were directly affected as landowners subject to the communal works duty and substitute payment.
Motifs extraits
They were personally and directly burdened by the regulation, unlike C. acting in his own name, so they had standing under federal procedural rules.