Article L2521-1 of the French General Code of Local Authorities
In the départements of Hauts-de-Seine, Seine-Saint-Denis and Val-de-Marne, the representative of the State in the département is responsible for policing the public highways on main roads, including with regard to freedom and safety, in addition to the policing powers exercised in communes where policing is state-run in accordance with articles L. 2214-3 and L. 2214-4.