Participatory decentralization is the process of handing out legitimate political authority to the citizens. It contributes to democratization by bringing the government ‘closer to the people’, imparting the citizens with political knowledge through their participation in local management, and making the government more accountable. 
This case study features a referendum on a controversial viaduct in Antwerp, Belgium. The construction of this viaduct was highly troubled and costly from the beginning, attracting heavy criticism from multiple groups. A referendum ultimately rejected plans to build the unpopular bridge, instead replacing it with a series of tunnels.