The Ile-de-France region defines regional travel policy, in compliance with the guidelines of the master plan for the Ile-de-France region provided for by Article L. 123-1 of the town planning code and the mobility plan provided for in Article 28-3 of Law no. 82-1153 of 30 December 1982 on the orientation of domestic transport.
To this end, the Ile-de-France region shall draw up, in association with the State and Ile-de-France Mobilités, a regional transport infrastructure planning document satisfying the conditions set out in article L. 1213-1 of the Transport Code.
The region may also participate in financing safety improvements on unconcessioned motorways and roads in the Ile-de-France region.