Key legal question
Whether the appellant had standing to challenge the traffic-calming installation under Art. 89(1) LTF.
Extracted holding
He lacked the required special, direct and practical interest; as a frequent road user he was not sufficiently individually affected.
Extracted reasoning
The complaint amounted to an impermissible actio popularis. Regular use of the road, without a privileged right of use or neighborhood proximity, does not confer standing. The alleged need to adjust speed in a 30 km/h zone was not a particular detriment.